MAGNA GROUP INC
SC 13D, 1998-03-04
NATIONAL COMMERCIAL BANKS
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<PAGE>   1


                       SECURITIES AND EXCHANGE COMMISSION
                              Washington D.C. 20549

                                  SCHEDULE 13D
                                 (Rule 13d-101)

                    Under the Securities Exchange Act of 1934
                             (Amendment No. _____)*

                                Magna Group, Inc.
                                -----------------
                                (Name of Issuer)

                     Common Stock, $2.00 par value per share
                     ---------------------------------------
                         (Title of Class of Securities)

                                    559214101
                                    ---------
                                 (CUSIP Number)

                                Jackson W. Moore
                                    President
                           Union Planters Corporation
                           7130 Goodlett Farms Parkway
                            Memphis, Tennessee 38018
                                 (901) 580-2877
                                 --------------

                       (Name, Address and Telephone Number
                         of Person Authorized to Receive
                           Notices and Communications)


                                February 22, 1998
                          -----------------------------
                          (Date of Event which Requires
                            Filing of this Statement)


If the filing person has previously filed a statement on Schedule 13G to report
the acquisition which is the subject of this Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box [ ].

Note: Six copies of this statement, including all exhibits, should be filed with
the Commission. See Rule 13d-l(a) for other parties to whom copies are to be
sent.

*The remainder of this cover page shall be filled out for a reporting person's
initial filing on this form with respect to the subject class of securities, and
for any subsequent amendment containing information which would alter
disclosures provided in a prior cover page.

THE INFORMATION REQUIRED ON THE REMAINDER OF THIS COVER PAGE SHALL NOT BE DEEMED
TO BE "FILED" FOR THE PURPOSE OF SECTION 18 OF THE SECURITIES EXCHANGE ACT OF
1934 ("ACT") OR OTHERWISE SUBJECT TO THE LIABILITIES OF THAT SECTION OF THE ACT
BUT SHALL BE SUBJECT TO ALL OTHER PROVISIONS OF THE ACT (HOWEVER, SEE THE
NOTES).



                                  Page 1 of 11
<PAGE>   2





- --------------------------------------------------------------------------------

CUSIP No.:   559214101
             ---------
- --------------------------------------------------------------------------------

1.    Name of Reporting Person:      Union Planters Corporation
                               -------------------------------------------------
      S.S. or I.R.S. Identification No. of Above Person:
                                                        ------------------------
                      I.R.S. Identification No. 62-0859007
      --------------------------------------------------------------------------
- --------------------------------------------------------------------------------

2.    Check the Appropriate Box if a Member of a Group (See Instructions):
      a.    [ ]         b.    [ ]

- --------------------------------------------------------------------------------

3.    SEC Use Only

- --------------------------------------------------------------------------------

4.    Source of Funds (see Instructions):            [WC; OO]
                                         ---------------------------------------
- --------------------------------------------------------------------------------

5.    Check Box if Disclosure of Legal Proceedings is Required Pursuant to Items
      2(d) or 2(e): [ ]

- --------------------------------------------------------------------------------

6.    Citizenship or Place of Organization:          Tennessee
                                           -------------------------------------
- --------------------------------------------------------------------------------

                   7.    Sole Voting Power:              *
                                           -------------------------------------
            
Number of          8.    Shared Voting Power:            0*
Shares                                       -----------------------------------
Beneficially
Owned by
Each Reporting     9.    Sole Dispositive Power:         *
Person With                                      -------------------------------
           
                   10.   Shared Dispositive Power:       0*
                                                  ------------------------------
- --------------------------------------------------------------------------------

11.   Aggregate Amount Beneficially Owned by Each Reporting Person:         *
                                                                   -------------
- --------------------------------------------------------------------------------

12.   Check Box if the Aggregate Amount in Row 11 Excludes Certain Shares
      (See Instructions):     [ ]

- --------------------------------------------------------------------------------

13.   Percent of Class Represented by Amount in Row 11:           16.6%**
                                                       -------------------------
- --------------------------------------------------------------------------------
14.   Type of Reporting Person (See Instructions):   CO
                                                  ------------------------------
- --------------------------------------------------------------------------------



                                  Page 2 of 11
<PAGE>   3


*  The shares that are the subject of this filing are purchasable by Union
Planters Corporation ("UPC") upon exercise of an option (the "Option") issued to
UPC on February 22, 1998, and described in Item 4 of this report. Prior to the
exercise of the Option, UPC is not entitled to any rights as a stockholder of
Magna Group, Inc. ("Magna") as to the shares covered by the Option. The Option
may only be exercised upon the happening of certain events referred to in Item
4, none of which has occurred as of the date hereof. UPC expressly disclaims
beneficial ownership of any of the shares of common stock of Magna which are
purchasable by UPC upon exercise of the Option.

**  The percentage indicated represents the percentage of the total outstanding
shares of common stock of Magna as of February 22, 1998, taking into
consideration the 6,497,180 shares of Magna common stock issuable pursuant to
the Option. For the reasons discussed in the footnote above, UPC expressly
disclaims beneficial ownership of any of the shares of common stock of Magna
which are purchasable by UPC upon exercise of the Option.




                                  Page 3 of 11
<PAGE>   4

ITEM 1.  SECURITY AND ISSUER.

      This statement relates to the common stock of Magna, $2.00 par value per
share (together with any associated preferred stock purchase rights, "Magna
Common Stock"). Magna is an Delaware corporation whose principal executive
offices are located at One Magna Place, 1401 South Brentwood Boulevard, St.
Louis, Missouri 63144-1401.

ITEM 2.  IDENTITY AND BACKGROUND.

      This statement is being filed by UPC, a Tennessee chartered bank holding
company whose principal executive offices are located at 7130 Goodlett Farms
Parkway, Memphis, Tennessee 38018.

      To the best of UPC' knowledge, during the last five years, neither UPC nor
any of its directors or executive officers has been convicted in any criminal
proceedings (excluding traffic violations or similar misdemeanors) nor has UPC
or any of its directors or executive officers been a party to any civil
proceeding of a judicial or administrative body of competent jurisdiction
resulting in a judgment, decree or final order enjoining future violations of,
or prohibiting or mandating activities subject to, federal or state securities
laws or finding any violation with respect to such laws.

      Attached hereto is an appendix to Item 2 setting forth certain additional
information concerning the directors and executive officers of UPC.

ITEM 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION.

      It is presently anticipated that shares of Magna Common Stock as described
in Item 4 would be purchased with working capital funds of UPC.

ITEM 4.  PURPOSE OF TRANSACTION.

      Pursuant to an Agreement and Plan of Reorganization, dated as of February
22, 1998 (the "Agreement"), by and between UPC and Magna, and in consideration
thereof, Magna issued an option to UPC on February 22, 1998 (the "Option") to
purchase, under certain conditions, up to 6,497,180 shares of Magna Common Stock
at a purchase price equal to $57.50, subject to adjustment pursuant to
anti-dilution provisions (the "Purchase Price"). The Option was issued to UPC
pursuant to a Stock Option Agreement, dated as of February 22, 1998 (the "Option
Agreement"), between UPC and Magna.

      The Agreement provides, among other things, for the merger of Magna with
and into Union Planters Holding Corporation ("UPHC"), a wholly-owned subsidiary
of UPC, with UPHC as the corporation surviving from the merger (the "Merger").
Upon consummation of the Merger, which is subject to the approval of the Magna
and UPC stockholders, regulatory approvals, and the satisfaction or waiver of
various other terms and conditions, each share of Magna Common Stock (including
any associated preferred stock purchase rights, but excluding shares held by
Magna, or UPC, or any of their respective subsidiaries, in each case other than
in a fiduciary capacity or as a result of debts previously contracted) issued
and outstanding shall be converted into .9686 of a share of the common stock of
UPC, $5.00 par value per share ("UPC Common Stock") (the "Exchange Ratio"). Each
share of UPC Common Stock issued in connection with the Merger upon conversion
of Magna Common Stock shall be accompanied by a UPC Right (as defined in the
Agreement).

                                  Page 4 of 11
<PAGE>   5

      If (i) UPC is not in material breach of the Option Agreement or the
Agreement, and (ii) no injunction against delivery of the shares covered by the
Option is in effect, UPC may exercise the Option in whole or in part, at any
time and from time to time following the happening of certain events (each a
"Purchase Event") and prior to the termination of the Option, including, among
others:

      (A)   Magna shall have authorized, recommended, publicly proposed or
            publicly announced an intention to authorize, recommend or propose,
            or entered into an agreement with any person (other than UPC or any
            subsidiary of UPC) to effect (each an "Acquisition Transaction") 
            (1) a merger, consolidation or similar transaction involving 
            Magna or its subsidiaries (with certain exceptions), (2) the sale, 
            lease, exchange or other disposition of 20 perce or more of the 
            consolidated assets of Magna and its subsidiaries, or (3) the 
            issuance, sale or other disposition of 20 percent or more of the 
            voting securities of Magna or any of its subsidiaries; or

      (B)   any third party (other than UPC or any subsidiary of UPC) acquires,
            or obtains the right to acquire, beneficial ownership of 20 percent
            or more of the outstanding shares of Magna Common Stock;

provided, the Option will terminate upon the earliest of: (i) the Effective
Time; (ii) termination of the Agreement (other than as a result of a willful
breach of any representation or warranty or breach of any covenant by Magna
(each a "Default Termination")) prior to the occurrence of a Purchase Event or a
Preliminary Purchase Event (as defined below) (A) the commencement by any third
party of a tender or exchange offer to purchase 15 percent or more of the
outstanding shares of Magna Common Stock, or (B) the occurrence of certain
circumstances surrounding the failure of the stockholders of Magna to approve
the Agreement, the failure to hold a meeting of the Magna stockholders to
approve the Agreement, or the withdrawal or modification in a manner adverse to
UPC, of the recommendation of Magna's Board of Directors with respect to the
Agreement (each a "Preliminary Purchase Event"); (iii) 18 months after the
termination of the Agreement by UPC pursuant to a Default Termination; or (iv)
18 months after termination of the Agreement following the occurrence of a
Purchase Event or a Preliminary Purchase Event.

      At the request of UPC at any time, beginning on the first occurrence of
certain events (each a "Repurchase Event"), including, among others, the
acquisition by a third party of 50 percent or more of the outstanding shares of
Magna Common Stock, and ending upon the earlier of 18 months immediately
thereafter or termination of the Option, Magna will repurchase from UPC (i) the
Option, and (ii) all shares of Magna Common Stock purchased by UPC pursuant to
the Option Agreement, at a specified price.

      Upon the occurrence of certain events set forth in the Option Agreement
generally relating to the merger of Magna with, or sale by Magna of
substantially all of its assets to, a third party (other than UPC or a
subsidiary of UPC), the Option must be converted into, or exchanged for, an
option, at the election of UPC, of another corporation or Magna (the "Substitute
Option"). The terms of any such Substitute Option are set forth in the Option
Agreement.

      A copy of the Agreement and the Option Agreement is incorporated by
reference herein as Exhibits 1 and 2, respectively, and the foregoing summary is
qualified in its entirety by reference thereto.

                                  Page 5 of 11
<PAGE>   6

ITEM 5. INTEREST IN SECURITIES OF MAGNA.

      The 6,497,180 shares of Magna Common Stock which are purchasable by UPC
upon exercise of the Option are equal to approximately 19.9 percent of Magna
Common Stock, based on the 32,649,181 shares of Magna Common Stock issued and
outstanding on February 20, 1998, before taking into consideration the 6,497,180
shares of Magna Common Stock that would be issued pursuant to the Option.

      The Option contains anti-dilution provisions which provide that the number
of shares of Magna Common Stock issuable upon exercise of the Option and the
Purchase Price will be adjusted upon the happening of certain events, including
the payment of a stock dividend or other distribution in Magna Common Stock or
the subdivision or reclassification of Magna Common Stock, as set forth in the
Option Agreement. If any additional shares of Magna Common Stock are issued
after the date of the Option Agreement other than those described in the
preceding sentence and shares issued upon exercise of the Option, the number of
shares subject to the Option (taking into account the shares previously issued
pursuant to the Option), shall be adjusted so that such number of shares
following such issuance shall not exceed the lesser of (i) 19.9 percent of the
number of shares of Magna Common Stock then issued and outstanding without
giving effect to the Option, and (ii) that minimum number of shares of Magna
Common Stock which when aggregated with any other shares of Magna Common Stock
beneficially owned by UPC or any Affiliate thereof would cause the provisions of
certain Delaware takeover laws to be applicable to the Merger.

      UPC expressly disclaims any beneficial ownership of the shares of Magna
Common Stock which are purchasable by UPC upon exercise of the Option because
the Option is exercisable only in the circumstances referred to in Item 4 above,
none of which has occurred as of this date.

      Other than as set forth in this Item 5, to the best of UPC' knowledge (i)
neither UPC nor any subsidiary or affiliate of UPC or any of its or their
executive officers or directors beneficially owns any shares of Magna Common
Stock, and (ii) there have been no transactions in the shares of Magna Common
Stock effected during the past 60 days by UPC, nor to the best of UPC'
knowledge, by any subsidiary or affiliate of UPC or any of its or their
executive officers or directors.

      No other person is known by UPC to have the right to receive or the power
to direct the receipt of dividends from, or the proceeds from the sale of, the
Magna Common Stock obtainable by UPC upon exercise of the Option.

ITEM 6. CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH RESPECT TO
        SECURITIES OF MAGNA.

      Other than the Agreement, including the Option Agreement, a copy of which
(excluding certain exhibits) is incorporated by reference herein, to the best of
UPC' knowledge there are at present no contracts, arrangements, understandings
or relationships (legal or otherwise) among the persons named in Item 2 above
and between such persons and any person with respect to any securities of Magna.

ITEM 7. MATERIAL TO BE FILED AS EXHIBITS.

      The Agreement and the Option Agreement are filed herewith as Exhibits 1
and 2, respectively.


                                  Page 6 of 11
<PAGE>   7


SIGNATURE.

After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete and correct.


                                    UNION PLANTERS CORPORATION



Date:   March 4, 1998     By:       /s/  M. Kirk Walters
        -------------         ------------------------------------------------
                                        M. Kirk Walters
                                        Senior Vice President, Treasurer and
                                          Chief Accounting Officer



                                  Page 7 of 11
<PAGE>   8

                                                              APPENDIX TO ITEM 2

<TABLE>
<CAPTION>
                                              PRINCIPAL OCCUPATION OR  
                                                 EMPLOYMENT, NAME OF   
                          POSITION WITH        BUSINESS, PRINCIPAL    
                          UNION PLANTERS      BUSINESS, AND PRINCIPAL  
      NAME                 CORPORATION           BUSINESS ADDRESS     
- ----------------         ---------------    ---------------------------------
<S>                      <C>                <C>
Albert M. Austin         Director           Chairman
                                            CANNON, AUSTIN AND CANNON, 
                                              INC. (real estate)
                                            Suite 200
                                            6685 Poplar Avenue
                                            Germantown, Tennessee  38138

Edgar H. Bailey          Vice Chairman      Vice Chairman
                                            UNION PLANTERS CORPORATION
                                            6200 Poplar Avenue, HQ4
                                            Memphis, Tennessee  38119

Marvin E. Bruce          Director           Director and Chairman
                                            TBC CORPORATION
                                            (marketer/distributor of
                                            auto replacement products)
                                            476 West Racquet Club Place
                                            Memphis, Tennessee  38117

George W. Bryan          Director           Senior Vice President
                                            SARA LEE CORPORATION
                                            (Meat Group Division, meat
                                            processor and packagor)
                                            Suite 300
                                            8000 Centerview Parkway
                                            Cordova, Tennessee  38018

James A. Gurley          Executive Vice     Executive Vice President and
                         President            Senior Risk Management Officer
                         and Senior Risk    UNION PLANTERS CORPORATION       
                         Management Officer and UNION PLANTERS BANK, NATIONAL
                                              ASSOCIATION ("UPBNA")          
                                            7130 Goodlett Farms Parkway      
                                            Memphis, Tennessee  38018        
                                                                             

James E. Harwood         Director           President
                                            STERLING EQUITIES
                                            (provider of advisory
                                            services and capital to
                                            small businesses)
                                            Suite 124
                                            845 Crossover Lane
                                            Memphis, Tennessee  38117
</TABLE>



                                  Page 8 of 11
<PAGE>   9

<TABLE>
<CAPTION>
                                              PRINCIPAL OCCUPATION OR  
                                                 EMPLOYMENT, NAME OF   
                          POSITION WITH        BUSINESS, PRINCIPAL    
                          UNION PLANTERS      BUSINESS, AND PRINCIPAL  
      NAME                 CORPORATION           BUSINESS ADDRESS     
- ---------------------    ---------------    ------------------------------
<S>                      <C>                <C>
Parnell S. Lewis, Jr.    Director           President
                                            ANDERSON-TULLY COMPANY
                                            (hardwood lumber products)
                                            1242 North Second Street
                                            Memphis, Tennessee  38101

C. J. Lowrance, III      Director           President
                                            LOWRANCE BROTHERS &
                                            COMPANY, INC. (planter)
                                            Highway 61
                                            Driver, AR  72329

Jackson W. Moore         President,         President and Chief
                         Chief Operating      Operating Officer
                         Officer and        UNION PLANTERS CORPORATION
                         Director           and UPBNA
                                            7130 Goodlett Farms Parkway
                                            Memphis, Tennessee  38018

Stanley D. Overton       Director           Retired; Former Chairman of
                                            UNION PLANTERS BANK OF
                                            MIDDLE TENNESSEE, N.A. (bank)
                                            401 Union Street
                                            Nashville, Tennessee  37219

J. W. Parker             Executive Vice     Executive Vice President and
                         President and        Chief Financial Officer
                         Chief Financial    UNION PLANTERS CORPORATION
                         Officer            and UPBNA
                                            7130 Goodlett Farms Parkway
                                            Memphis, Tennessee  38018

Benjamin W. Rawlins, Jr. Chairman of the    Chairman of the Board and
                         Board and Chief      Chief Executive Officer
                         Executive Officer  UNION PLANTERS CORPORATION
                                            and UPBNA
                                            7130 Goodlett Farms Parkway
                                            Memphis, Tennessee  38018

V. Lane Rawlins          Director           President
                                            UNIVERSITY OF MEMPHIS
                                            341 Administration Building
                                            Memphis, Tennessee  38152
</TABLE>


                                  Page 9 of 11
<PAGE>   10

<TABLE>
<CAPTION>
                                              PRINCIPAL OCCUPATION OR  
                                                 EMPLOYMENT, NAME OF   
                          POSITION WITH        BUSINESS, PRINCIPAL    
                          UNION PLANTERS      BUSINESS, AND PRINCIPAL  
      NAME                 CORPORATION           BUSINESS ADDRESS     
- -----------------        ---------------    ------------------------------
<S>                      <C>                <C>
Donald F. Schuppe        Director           DFS SERVICE COMPANY
                                            (consulting)
                                            6448 Winfrey Place
                                            Memphis, Tennessee  38120

J. Armistead Smith       Executive Vice     Executive Vice President and
                         President and        Senior Lending Officer
                         Senior Lending     UNION PLANTERS CORPORATION
                         Officer            and UPBNA
                                            7130 Goodlett Farms Parkway
                                            Memphis, Tennessee  38018

Mike P. Sturdivant       Director           President
                                            DUE WEST GIN CO., INC.
                                            (cotton ginning); Investor,
                                            Chairman, Executive
                                            (various entities)
                                            P.O. Box 230
                                            Glendora, MS  38928

David M. Thomas          Director           Retired:  Former President of
                                            MAGNOLIA FEDERAL BANK FOR SAVINGS
                                            1765 Camellia Drive
                                            Greenville, Mississippi  38701

Richard A. Trippeer, Jr. Director           President
                                            R.A. TRIPPEER, INC.
                                              (investments)
                                            Suite 300
                                            5865 Ridgeway Center Parkway
                                            Memphis, Tennessee  38120

M. K. Walters            Senior Vice        Senior Vice President, Chief
                         President, Chief     Accounting Officer, Treasurer
                         Accounting         UNION PLANTERS CORPORATION 
                         Officer, and       and UPBNA                  
                         Treasurer          7130 Goodlett Farms Parkway
                                            Memphis, Tennessee  38018  
                                                                       
</TABLE>



                                 Page 10 of 11
<PAGE>   11

<TABLE>
<CAPTION>
                                              PRINCIPAL OCCUPATION OR  
                                                 EMPLOYMENT, NAME OF   
                          POSITION WITH        BUSINESS, PRINCIPAL    
                          UNION PLANTERS      BUSINESS, AND PRINCIPAL  
      NAME                 CORPORATION           BUSINESS ADDRESS     
- ----------------         ---------------    ---------------------------
<S>                      <C>                <C>
Spence L. Wilson         Director           President
                                            KEMMONS WILSON, INC.
                                            (provider of management
                                            advisory services and
                                            venture capital, developer
                                            of residential and
                                            commercial real estate, and
                                            thrift hold company)
                                            1629 Winchester Road
                                            Memphis, Tennessee  38116
</TABLE>





                                 Page 11 of 11

<PAGE>   1
                                                                       EXHIBIT 1

                                                                           





                      AGREEMENT AND PLAN OF REORGANIZATION

                                 BY AND BETWEEN

                               MAGNA GROUP, INC.

                                      AND

                           UNION PLANTERS CORPORATION


                         DATED AS OF FEBRUARY 22, 1998
<PAGE>   2


                               TABLE OF CONTENTS
<TABLE>
<CAPTION>
                                                                                                        PAGE
                                                                                                        ----
<S>                                                                                                      <C>
Parties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       1
Preamble  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       1
ARTICLE 1 - TRANSACTIONS AND TERMS OF MERGER  . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
    1.1     Merger. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
    1.2     Time and Place of Closing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
    1.3     Effective Time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
    1.4     Execution of Stock Option Agreement . . . . . . . . . . . . . . . . . . . . . . . . . .       2
ARTICLE 2 - TERMS OF MERGER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
    2.1     Charter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       2
    2.2     Bylaws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       3
    2.3     Directors and Officers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       3
ARTICLE 3 - MANNER OF CONVERTING SHARES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       3
    3.1     Conversion of Shares. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       3
    3.2     Anti-Dilution Provisions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       4
    3.3     Shares Held by Magna or UPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       4
    3.4     Dissenting Stockholders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       4
    3.5     Fractional Shares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       4
    3.6     Conversion of Stock Rights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       5
ARTICLE 4 - EXCHANGE OF SHARES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       6
    4.1     Exchange Procedures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       6
    4.2     Rights of Former Magna Stockholders . . . . . . . . . . . . . . . . . . . . . . . . . .       6
ARTICLE 5 - REPRESENTATIONS AND WARRANTIES OF MAGNA . . . . . . . . . . . . . . . . . . . . . . . .       7
    5.1     Organization, Standing, and Power . . . . . . . . . . . . . . . . . . . . . . . . . . .       7
    5.2     Authority; No Breach By Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . .       7
    5.3     Capital Stock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       8
    5.4     Magna Subsidiaries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .       9
    5.5     SEC Filings; Financial Statements . . . . . . . . . . . . . . . . . . . . . . . . . . .      10
    5.6     Absence of Undisclosed Liabilities. . . . . . . . . . . . . . . . . . . . . . . . . . .      10
    5.7     Absence of Certain Changes or Events. . . . . . . . . . . . . . . . . . . . . . . . . .      10
    5.8     Tax Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      11
    5.9     Assets. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      12
    5.10    Environmental Matters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      12
    5.11    Compliance with Laws. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      13
    5.12    Labor Relations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      14
    5.13    Employee Benefit Plans. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      14
    5.14    Material Contracts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      16
    5.15    Legal Proceedings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      17
    5.16    Reports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      17
    5.17    Statements True and Correct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      17
    5.18    Accounting, Tax, and Regulatory Matters . . . . . . . . . . . . . . . . . . . . . . . .      18
</TABLE>





                                     - i -
<PAGE>   3


<TABLE>
<S>                                                                                                     <C>     
    5.19    State Takeover Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          18      
    5.20    Charter Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          18      
    5.21    Rights Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          18      
    5.22    Derivatives  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          19      
    5.23    Year 2000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          19      
ARTICLE 6 - REPRESENTATIONS AND WARRANTIES OF UPC. . . . . . . . . . . . . . . . . . . . . . .          19
    6.1     Organization, Standing, and Power  . . . . . . . . . . . . . . . . . . . . . . . .          19     
    6.2     Authority; No Breach By Agreement  . . . . . . . . . . . . . . . . . . . . . . . .          19     
    6.3     Capital Stock  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          20     
    6.4     UPC Subsidiaries . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          20     
    6.5     SEC Filings; Financial Statements  . . . . . . . . . . . . . . . . . . . . . . . .          21     
    6.6     Absence of Undisclosed Liabilities . . . . . . . . . . . . . . . . . . . . . . . .          22     
    6.7     Absence of Certain Changes or Events . . . . . . . . . . . . . . . . . . . . . . .          22     
    6.8     Tax Matters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          22     
    6.9     Assets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          23     
    6.10    Environmental Matters  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          23     
    6.11    Compliance with Laws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          24     
    6.12    Labor Relations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          25     
    6.13    Legal Proceedings  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          25     
    6.14    Reports  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          25     
    6.15    Statements True and Correct  . . . . . . . . . . . . . . . . . . . . . . . . . . .          26     
    6.16    Accounting, Tax, and Regulatory Matters  . . . . . . . . . . . . . . . . . . . . .          26     
    6.17    Employee Benefit Plans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          26     
    6.18    Derivatives  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          27     
    6.19    Year 2000  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          27     
ARTICLE 7 - CONDUCT OF BUSINESS PENDING CONSUMMATION . . . . . . . . . . . . . . . . . . . . .          27
    7.1     Affirmative Covenants of Both Parties  . . . . . . . . . . . . . . . . . . . . . .          27     
    7.2     Negative Covenants of Magna  . . . . . . . . . . . . . . . . . . . . . . . . . . .          27     
    7.3     Adverse Changes in Condition . . . . . . . . . . . . . . . . . . . . . . . . . . .          30     
    7.4     Reports  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          30     
ARTICLE 8 - ADDITIONAL AGREEMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          30
    8.1     Registration Statement; Joint Proxy Statement; Stockholder Approvals . . . . . . .          30     
    8.2     Exchange Listing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          31     
    8.3     Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          31     
    8.4     Filings with State Offices . . . . . . . . . . . . . . . . . . . . . . . . . . . .          31     
    8.5     Agreement as to Efforts to Consummate  . . . . . . . . . . . . . . . . . . . . . .          31     
    8.6     Investigation and Confidentiality  . . . . . . . . . . . . . . . . . . . . . . . .          32     
    8.7     Press Releases . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          32     
    8.8     Certain Actions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          33     
    8.9     Accounting and Tax Treatment . . . . . . . . . . . . . . . . . . . . . . . . . . .          33     
    8.10    State Takeover Laws  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          33     
    8.11    Charter Provisions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          33     
    8.12    Rights Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          33     
</TABLE>





                                     - ii -
<PAGE>   4


<TABLE>
<S>                                                                                                     <C>     
    8.13     Agreement of Affiliates  . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          34      
    8.14     Employee Benefits and Contracts  . . . . . . . . . . . . . . . . . . . . . . . . .          34      
    8.15     Indemnification  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          35      
    8.16     Certain Modifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          36      
    8.17     Pending Magna Acquisition  . . . . . . . . . . . . . . . . . . . . . . . . . . . .          37      
ARTICLE 9 -  CONDITIONS PRECEDENT TO OBLIGATIONS TO CONSUMMATE. . . . . . . . . . . . . . . . .          37
    9.1      Conditions to Obligations of Each Party  . . . . . . . . . . . . . . . . . . . . .          37     
    9.2      Conditions to Obligations of UPC . . . . . . . . . . . . . . . . . . . . . . . . .          39     
    9.3      Conditions to Obligations of Magna . . . . . . . . . . . . . . . . . . . . . . . .          40     
ARTICLE 10 - TERMINATION  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          41
    10.1     Termination  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          41    
    10.2     Effect of Termination  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          42    
    10.3     Non-Survival of Representations and Covenants  . . . . . . . . . . . . . . . . . .          42    
ARTICLE 11 - MISCELLANEOUS  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          42
    11.1     Definitions  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          42
    11.2     Expenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          51
    11.3     Brokers and Finders  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          51
    11.4     Entire Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          51
    11.5     Amendments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          52
    11.6     Waivers  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          52
    11.7     Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          52
    11.8     Notices  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          53
    11.9     Governing Law  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          54
    11.10    Counterparts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          54
    11.11    Captions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          54
    11.12    Interpretations  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          54
    11.13    Enforcement of Agreement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          54
    11.14    Severability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          54
Signatures  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .          55
</TABLE>





                                    - iii -
<PAGE>   5


                                LIST OF EXHIBITS


<TABLE>
<CAPTION>
EXHIBIT NUMBER     DESCRIPTION
- --------------     -----------
     <S>           <C>
     1.            Form of Stock Option Agreement.  (Section 1.4).
             
     2.            Form of Plan of Merger.  (Section 1.1)
             
     3.            Form of Affiliate Agreement.  (Sections 8.13, 9.2(d)).
</TABLE>





                                     - iv -
<PAGE>   6


                      AGREEMENT AND PLAN OF REORGANIZATION


             THIS AGREEMENT AND PLAN OF REORGANIZATION (this "Agreement") is
made and entered into as of February 22, 1998, by and between MAGNA GROUP, INC.
("Magna"), a corporation organized and existing under the Laws of the State of
Delaware, with its principal office located in St. Louis, Missouri; and UNION
PLANTERS CORPORATION ("UPC"), a corporation organized and existing under the
Laws of the State of Tennessee, with its principal office located in Memphis,
Tennessee.


                                    PREAMBLE

             The Boards of Directors of Magna and UPC are of the opinion that
the transactions described herein are in the best interests of the parties to
this Agreement and their respective stockholders.  This Agreement provides for
the acquisition of Magna by UPC pursuant to the merger (the "Merger") of Magna
with and into Union Planters Holding Corporation ("UPHC"), a wholly-owned
subsidiary of UPC organized under the Laws of the State of Tennessee.  At the
effective time of the Merger, the outstanding shares of the common stock of
Magna shall be converted into shares of the common stock of UPC (except as
provided herein) and the outstanding shares of preferred stock of Magna shall
be converted into cash payments.  As a result, stockholders of Magna shall
become stockholders of UPC, and UPHC shall continue to conduct the business and
operations of Magna as a wholly-owned subsidiary of UPC.  The transactions
described in this Agreement are subject to the approvals of the stockholders of
Magna, the stockholders of UPC, the Board of Governors of the Federal Reserve
System, and certain state regulatory authorities, and the satisfaction of
certain other conditions described in this Agreement.  It is the intention of
the parties to this Agreement that the Merger (i) for federal income tax
purposes shall qualify as a "reorganization" within the meaning of Section
368(a) of the Internal Revenue Code and (ii) for accounting purposes shall
qualify for treatment as a pooling of interests.

             Immediately after the execution and delivery of this Agreement, as
a condition and inducement to UPC's willingness to enter into this Agreement,
Magna and UPC are entering into a stock option agreement (the "Stock Option
Agreement"), in substantially the form of Exhibit 1, pursuant to which Magna is
granting to UPC an option to purchase shares of Magna Common Stock.

             Certain terms used in this Agreement are defined in Section 11.1
of this Agreement.
 
             NOW, THEREFORE, in consideration of the above and the mutual
warranties, representations, covenants, and agreements set forth herein, the
Parties agree as follows:





<PAGE>   7


                                   ARTICLE 1
                        TRANSACTIONS AND TERMS OF MERGER

             1.1   MERGER.  Subject to the terms and conditions of this
Agreement, at the Effective Time, Magna shall be merged with and into UPHC in
accordance with the provisions of Section 252 of the DGCL and with the effect
provided in Section 259 of the DGCL and in accordance with the provisions of
Section 48-21-109 of the TBCA and with the effect provided in Section 48-21-108
of the TBCA (the "Merger").  UPHC shall be the Surviving Corporation resulting
from the Merger and shall continue to be governed by the Laws of the State of
Tennessee.  The Merger shall be consummated pursuant to the terms of this
Agreement, which has been approved and adopted by the respective Boards of
Directors of Magna and UPC, and the Plan of Merger, in substantially the form
of Exhibit 2, which has been approved and adopted by the Board of Directors of
Magna and will be approved and adopted by the Board of Directors of UPHC prior
to the Effective Time.

             1.2   TIME AND PLACE OF CLOSING.  The consummation of the Merger
(the "Closing") shall take place at 9:00 A.M. on the date that the Effective
Time occurs (or the immediately preceding day if the Effective Time is earlier
than 9:00 A.M.), or at such other time as the Parties, acting through their
duly authorized officers, may mutually agree.  The place of Closing shall be at
such location as may be mutually agreed upon by the Parties.

             1.3   EFFECTIVE TIME.  The Merger and the other transactions
contemplated by this Agreement shall become effective on the date and at the
time the Certificate of Merger shall become effective with the Secretary of
State of the State of Delaware and the Articles of Merger shall become
effective with the Secretary of State of the State of Tennessee (the "Effective
Time").  Subject to the terms and conditions hereof, unless otherwise mutually
agreed upon in writing by the duly authorized officers of each Party, the
Parties shall use their reasonable efforts to cause the Effective Time to occur
on or before the 15th business day (as designated by UPC) following the last to
occur of (i) the effective date (including expiration of any applicable waiting
period) of the last required Consent of any Regulatory Authority having
authority over and approving or exempting the Merger and (ii) the date on which
the stockholders of UPC and Magna approve the matters relating to this
Agreement required to be approved by such stockholders by applicable Law.

             1.4   EXECUTION OF STOCK OPTION AGREEMENT.  Immediately after the
execution of this Agreement and as a condition hereto, Magna is executing and
delivering to UPC the Stock Option Agreement.


                                   ARTICLE 2
                                TERMS OF MERGER

             2.1   CHARTER.  The Charter of UPHC in effect immediately prior to
the Effective Time shall be the Charter of the Surviving Corporation after the
Effective Time until otherwise amended or repealed.





                                     - 2 -
<PAGE>   8


             2.2   BYLAWS.  The Bylaws of UPHC in effect immediately prior to
the Effective Time shall be the Bylaws of the Surviving Corporation after the
Effective Time until otherwise amended or repealed.

             2.3   DIRECTORS AND OFFICERS.  The directors of UPHC in office
immediately prior to the Effective Time, together with such additional
individuals thereafter elected, shall serve as the directors of the Surviving
Corporation from and after the Effective Time in accordance with the Bylaws of
the Surviving Corporation.  The officers of UPHC in office immediately prior to
the Effective Time, together with such additional individuals thereafter
elected, shall serve as the officers of the Surviving Corporation from and
after the Effective Time in accordance with the Bylaws of the Surviving
Corporation.


                                   ARTICLE 3
                          MANNER OF CONVERTING SHARES

             3.1   CONVERSION OF SHARES.  Subject to the provisions of this
Article 3, at the Effective Time, by virtue of the Merger and without any
action on the part of UPC or Magna, or the stockholders of either of the
foregoing, the shares of the constituent corporations shall be converted as
follows:

                   (a)    Each share of UPC Common Stock issued and outstanding
      immediately prior to the Effective Time shall remain issued and
      outstanding from and after the Effective Time.

                   (b)    Each share of UPHC Common Stock issued and
      outstanding immediately prior to the Effective Time shall remain issued
      and outstanding from and after the Effective Time.

                   (c)    Each share of Magna Common Stock (including any
      associated Preferred Stock Purchase Rights, but excluding shares held by
      any Magna Company or any UPC Company, in each case other than in a
      fiduciary capacity or as a result of debts previously contracted) issued
      and outstanding at the Effective Time shall be converted into .9686 of a
      share of UPC Common Stock (the "Exchange Ratio").  Pursuant to the UPC
      Rights Agreement, each share of UPC Common Stock issued in connection
      with the Merger upon conversion of Magna Common Stock shall be
      accompanied by a UPC Right.

                   (d)    Each share of Magna Class B Preferred Stock
      (excluding any shares held by any Magna Company or any UPC Company, in
      each case other than in a fiduciary capacity as a result of debts
      previously contracted) issued and outstanding at the Effective Time,
      shall be converted into the right to receive a check from UPC in the
      amount of the Preferred Stock Cash Payment Amount.





                                     - 3 -
<PAGE>   9


             3.2   ANTI-DILUTION PROVISIONS.  In the event Magna changes the
number of shares of Magna Common Stock or Magna Class B Preferred Stock issued
and outstanding prior to the Effective Time as a result of a stock split, stock
dividend, recapitalization, or similar transaction with respect to such stock,
the Exchange Ratio and the Preferred Stock Cash Payment Amount, as the case may
be, shall be proportionately adjusted.  In the event UPC changes the number of
shares of UPC Common Stock issued and outstanding prior to the Effective Time
as a result of a stock split, stock dividend, recapitalization, or similar
transaction with respect to such stock and the record date therefor (in the
case of a stock dividend) or the effective date thereof (in the case of a stock
split or similar recapitalization for which a record date is not established)
shall be prior to the Effective Time, the Exchange Ratio shall be
proportionately adjusted.

             3.3   SHARES HELD BY MAGNA OR UPC.  Each of the shares of Magna
Capital Stock held by any Magna Company or by any UPC Company, in each case
other than in a fiduciary capacity or as a result of debts previously
contracted, shall be canceled and retired at the Effective Time and no
consideration shall be issued in exchange therefor.

             3.4   DISSENTING STOCKHOLDERS.  Any holder of shares of Magna
Class B Preferred Stock who perfects such holder's dissenters' rights of
appraisal in accordance with and as contemplated by Section 262 of the DGCL
shall be entitled to receive the value of such shares in cash as determined
pursuant to such provision of Law; provided, however, that no such payment
shall be made to any dissenting stockholder unless and until such dissenting
stockholder has complied with the applicable provisions of the DGCL and
surrendered to Magna the certificate or certificates representing the shares
for which payment is being made.  In the event that after the Effective Time a
dissenting stockholder of Magna fails to perfect, or effectively withdraws or
loses, such holder's right to appraisal of and payment for such holder's
shares, UPC shall issue and deliver the consideration to which such holder of
shares of Magna Class B Preferred Stock is entitled under this Article 3
(without interest) upon surrender by such holder of the certificate or
certificates representing shares of Magna Class B Preferred Stock held by such
holder.  Magna will establish an escrow account with an amount sufficient to
satisfy the maximum aggregate payment that may be required to be paid to
dissenting stockholders.  Upon satisfaction of all claims of dissenting
stockholders, the remaining escrowed amount, reduced by payment of the fees and
expenses of the escrow agent, will be returned to the Surviving Corporation.

             3.5   FRACTIONAL SHARES.  Notwithstanding any other provision of
this Agreement, each holder of shares of Magna Common Stock exchanged pursuant
to the Merger who would otherwise have been entitled to receive a fraction of a
share of UPC Common Stock (after taking into account all certificates delivered
by such holder) shall receive, in lieu thereof, cash (without interest) in an
amount equal to such fractional part of a share of UPC Common Stock multiplied
by the market value of one share of UPC Common Stock at the Effective Time.
The market value of one share of UPC Common Stock at the Effective Time shall
be the last sale price of UPC Common Stock on the NYSE-Composite Transactions
List (as reported by The Wall Street Journal or, if not reported thereby, any
other authoritative source selected by UPC) on the last trading day preceding
the Effective Time.  No such holder will be entitled to dividends, voting
rights, or any other rights as a stockholder in respect of any fractional
shares.





                                     - 4 -
<PAGE>   10


             3.6   CONVERSION OF STOCK RIGHTS.

                   (a)    At the Effective Time, each award, option, or other
right to purchase or acquire shares of Magna Common Stock pursuant to stock
options, stock appreciation rights, or stock awards ("Magna Rights") granted by
Magna under the Magna Stock Plans, which are outstanding at the Effective Time,
whether or not exercisable, shall be converted into and become rights with
respect to UPC Common Stock, and UPC shall assume each Magna Right, in
accordance with the terms of the Magna Stock Plan and stock option agreement by
which it is evidenced, except that from and after the Effective Time, (i) UPC
and its Salary and Benefits Committee shall be substituted for Magna and the
Committee of Magna's Board of Directors (including, if applicable, the entire
Board of Directors of Magna) administering such Magna Stock Plan, (ii) each
Magna Right assumed by UPC may be exercised solely for shares of UPC Common
Stock (or cash in the case of stock appreciation rights), (iii) the number of
shares of UPC Common Stock subject to such Magna Right shall be equal to the
number of shares of Magna Common Stock subject to such Magna Right immediately
prior to the Effective Time multiplied by the Exchange Ratio and rounding down
to the nearest whole share, and (iv) the per share exercise price (or similar
threshold price, in the case of stock awards) under each such Magna Right shall
be adjusted by dividing the per share exercise (or threshold) price under each
such Magna Right by the Exchange Ratio and rounding up to the nearest cent.
Notwithstanding the provisions of clauses (iii) and (iv) of the first sentence
of this Section 3.6, each Magna Right which is an "incentive stock option"
shall be adjusted as required by Section 424 of the Internal Revenue Code, so
as not to constitute a modification, extension, or renewal of the option,
within the meaning of Section 424(h) of the Internal Revenue Code.  UPC agrees
to take all necessary steps to effectuate the foregoing provisions of this
Section 3.6.

                   (b)    As soon as reasonably practicable after the Effective
Time, UPC shall deliver to the participants in each Magna Stock Plan an
appropriate notice setting forth such participant's rights pursuant thereto and
the grants pursuant to such Magna Stock Plan shall continue in effect on the
same terms and conditions (subject to the adjustments required by Section
3.6(a) after giving effect to the Merger), and UPC shall comply with the terms
of each Magna Stock Plan to ensure, to the extent required by, and subject to
the provisions of, such Magna Stock Plan, that Magna Rights which qualified as
incentive stock options prior to the Effective Time continue to qualify as
incentive stock options after the Effective Time.  At or prior to the Effective
Time, UPC shall take all corporate action necessary to reserve for issuance
sufficient shares of UPC Common Stock for delivery upon exercise of Magna
Rights assumed by it in accordance with this Section 3.6.  As soon as
reasonably practicable after the Effective Time, UPC shall file a registration
statement on Form S-3 or Form S-8, as the case may be (or any successor or
other appropriate forms), with respect to the shares of UPC Common Stock
subject to such options and shall use its reasonable efforts to maintain the
effectiveness of such registration statements (and maintain the current status
of the prospectus or prospectuses contained therein) for so long as such
options remain outstanding.  With respect to those individuals who subsequent
to the Merger will be subject to the reporting requirements under Section 16(a)
of the 1934 Act, where applicable, UPC shall administer the Magna Stock Plan
assumed pursuant to this Section 3.6 in a manner that complies with Rule 16b-3
promulgated under the 1934 Act.





                                     - 5 -
<PAGE>   11


                   (c)    All restrictions or limitations on transfer with
respect to Magna Common Stock awarded under the Magna Stock Plans or any other
plan, program, or arrangement of any Magna Company, to the extent that such
restrictions or limitations shall not have already lapsed, and except as
otherwise expressly provided in such plan, program, or arrangement, shall
remain in full force and effect with respect to shares of UPC Common Stock into
which such restricted stock is converted pursuant to Section 3.1 of this
Agreement.

                                   ARTICLE 4
                               EXCHANGE OF SHARES

             4.1   EXCHANGE PROCEDURES.  Promptly after the Effective Time, UPC
and Magna shall cause the exchange agent selected by UPC (the "Exchange Agent")
to mail to the former stockholders of Magna appropriate transmittal materials
(which shall specify that delivery shall be effected, and risk of loss and
title to the certificates theretofore representing shares of Magna Capital
Stock shall pass, only upon proper delivery of such certificates to the
Exchange Agent).  After the Effective Time, each holder of shares of Magna
Capital Stock (other than shares to be canceled pursuant to Section 3.3 of this
Agreement or as to which the holder thereof has perfected dissenters' rights of
appraisal as contemplated by Section 3.4 of this Agreement) issued and
outstanding at the Effective Time shall surrender the certificate or
certificates representing such shares to the Exchange Agent and shall promptly
upon surrender thereof receive in exchange therefor the consideration provided
in Section 3.1 of this Agreement, together with all undelivered dividends or
distributions in respect of such shares (without interest thereon) pursuant to
Section 4.2 of this Agreement.  To the extent required by Section 3.5 of this
Agreement, each holder of shares of Magna Common Stock issued and outstanding
at the Effective Time also shall receive, upon surrender of the certificate or
certificates representing such shares, cash in lieu of any fractional share of
UPC Common Stock to which such holder may be otherwise entitled (without
interest).  UPC shall not be obligated to deliver the consideration to which
any former holder of Magna Capital Stock is entitled as a result of the Merger
until such holder surrenders such holder's certificate or certificates
representing the shares of Magna Capital Stock for exchange as provided in this
Section 4.1.  The certificate or certificates of Magna Capital Stock so
surrendered shall be duly endorsed as the Exchange Agent may require.  Any
other provision of this Agreement notwithstanding, neither the Surviving
Corporation nor the Exchange Agent shall be liable to a holder of Magna Capital
Stock for any amounts paid or property delivered in good faith to a public
official pursuant to any applicable abandoned property Law.

             4.2   RIGHTS OF FORMER MAGNA STOCKHOLDERS.  At the Effective Time,
the stock transfer books of Magna shall be closed as to holders of Magna
Capital Stock immediately prior to the Effective Time and no transfer of Magna
Capital Stock by any such holder shall thereafter be made or recognized.  Until
surrendered for exchange in accordance with the provisions of Section 4.1 of
this Agreement, each certificate theretofore representing shares of Magna
Capital Stock (other than shares to be canceled pursuant to Section 3.3 of this
Agreement or as to which the holder thereof has perfected dissenters' rights of
appraisal as contemplated by Section 3.4 of this Agreement) shall from and
after the Effective Time represent for all purposes only the right to





                                     - 6 -
<PAGE>   12


receive the consideration provided in Sections 3.1 and 3.5 of this Agreement in
exchange therefor, subject, however, to the Surviving Corporation's obligation
to pay any dividends or make any other distributions with a record date prior
to the Effective Time which have been declared or made by Magna in respect of
such shares of Magna Capital Stock in accordance with the terms of this
Agreement and which remain unpaid at the Effective Time.  To the extent
permitted by Law, former stockholders of record of Magna shall be entitled to
vote after the Effective Time at any meeting of UPC stockholders the number of
whole shares of UPC Common Stock into which their respective shares of Magna
Common Stock are converted, regardless of whether such holders have exchanged
their certificates representing Magna Common Stock for certificates
representing UPC Common Stock in accordance with the provisions of this
Agreement. Whenever a dividend or other distribution is declared by UPC on the
UPC Common Stock, the record date for which is at or after the Effective Time,
the declaration shall include dividends or other distributions on all shares
issuable pursuant to this Agreement, but beginning 30 days after the Effective
Time no dividend or other distribution payable to the holders of record of UPC
Common Stock as of any time subsequent to the Effective Time shall be delivered
to the holder of any certificate representing shares of Magna Common Stock
issued and outstanding at the Effective Time until such holder surrenders such
certificate for exchange as provided in Section 4.1 of this Agreement.
However, upon surrender of such Magna Common Stock certificate, both the UPC
Common Stock certificate (together with all such undelivered dividends or other
distributions without interest) and any undelivered dividends and cash payments
to be paid for fractional share interests (without interest) shall be delivered
and paid with respect to each share represented by such certificate.


                                   ARTICLE 5
                    REPRESENTATIONS AND WARRANTIES OF MAGNA

             Except as set forth in the Magna Disclosure Memorandum referencing
a specific section of this Agreement, Magna hereby represents and warrants to
UPC as follows:

             5.1   ORGANIZATION, STANDING, AND POWER.  Magna is a corporation
duly organized, validly existing, and in good standing under the Laws of the
State of Delaware, and has the corporate power and authority to carry on its
business as now conducted and to own, lease, and operate its Material Assets.
Magna is duly qualified or licensed to transact business as a foreign
corporation in good standing in the States of the United States and foreign
jurisdictions where the character of its Assets or the nature or conduct of its
business requires it to be so qualified or licensed, except for such
jurisdictions in which the failure to be so qualified or licensed is not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on Magna.

             5.2   AUTHORITY; NO BREACH BY AGREEMENT.

                   (a)    Magna has the corporate power and authority necessary
to execute, deliver, and perform its obligations under this Agreement and the
Plan of Merger and to consummate the transactions contemplated hereby and
thereby.  The execution, delivery, and performance of this Agreement and the
Plan of Merger, and the consummation of the transactions





                                     - 7 -
<PAGE>   13


contemplated herein and therein, including the Merger, have been duly and
validly authorized by all necessary corporate action in respect thereof on the
part of Magna, subject to the approval of this Agreement and the Plan of Merger
by holders of the requisite number of shares of Magna Capital Stock , voting
together as one class, as required by Law, which is the only stockholder vote
required for approval of this Agreement and the Plan of Merger and consummation
of the Merger by Magna.  Subject to such requisite stockholder approval, this
Agreement and the Plan of Merger represent legal, valid, and binding
obligations of Magna, enforceable against Magna in accordance with their
respective terms (except in all cases as such enforceability may be limited by
applicable bankruptcy, insolvency, reorganization, receivership,
conservatorship, moratorium, or similar Laws affecting the enforcement of
creditors' rights generally and except that the availability of the equitable
remedy of specific performance or injunctive relief is subject to the
discretion of the court before which any proceeding may be brought).

                   (b)    Neither the execution and delivery of this Agreement
and the Plan of Merger by Magna, nor the consummation by Magna of the
transactions contemplated hereby or thereby, nor compliance by Magna with any
of the provisions hereof or thereof, will (i) conflict with or result in a
breach of any provision of Magna's Certificate of Incorporation or Bylaws or
(ii) constitute or result in a Default under, or require any Consent pursuant
to, or result in the creation of any Lien on any Asset of any Magna Company
under, any Contract or Permit of any Magna Company, where such Default or Lien,
or any failure to obtain such Consent, is reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on Magna, or (iii)
subject to receipt of the requisite Consents referred to in Section 9.1(b) of
this Agreement, violate any Law or Order applicable to any Magna Company or any
of their respective Material Assets.

                   (c)    Other than in connection or compliance with the
provisions of the Securities Laws, applicable state corporate and securities
Laws, and rules of the NYSE, and other than Consents required from Regulatory
Authorities, and other than notices to or filings with the Internal Revenue
Service or the Pension Benefit Guaranty Corporation with respect to any
employee benefit plans, or under the HSR Act, and other than Consents, filings,
or notifications which, if not obtained or made, are not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on Magna, no
notice to, filing with, or Consent of, any public body or authority is
necessary for the consummation by Magna of the Merger and the other
transactions contemplated in this Agreement and the Plan of Merger.

             5.3   CAPITAL STOCK.

                   (a)    The authorized capital stock of Magna consists, as of
the date of this Agreement, of (i) 80,000,000 shares of Magna Common Stock, of
which 32,649,181 shares were issued and outstanding as of February 20, 1998
and, excluding shares of Magna Common Stock issuable in connection with the
transaction referenced in Section 8.17 of this Agreement and without taking
into account any shares of Magna Common Stock repurchased by Magna prior to the
Effective Time, not more than 35,257,887 shares will be issued and outstanding
at the Effective Time, (ii) 1,000,000 shares of Magna Preferred Stock, of which
no shares are issued and outstanding as of the date of this Agreement and no
shares will be issued and outstanding as of





                                     - 8 -
<PAGE>   14


the Effective Time, (iii) 49,500 shares of Magna Class B Preferred Stock, of
which 1,981 shares are issued and outstanding as of the date of this Agreement
and not more than 1,981 shares will be issued and outstanding at the Effective
Time, and (iv) 1,000,000 shares of Magna Class C Preferred Stock, of which no
shares are issued and outstanding as of the date of this Agreement and no
shares will be issued and outstanding at the Effective Time.  All of the issued
and outstanding shares of Magna Capital Stock are duly and validly issued and
outstanding and are fully paid and nonassessable under the DGCL.  None of the
outstanding shares of Magna Capital Stock has been issued in violation of any
preemptive rights of the current or past stockholders of Magna.

                   (b)    Except (i) as set forth in Section 5.3(a) of this
Agreement, (ii) with respect to shares of Magna Common Stock issuable under the
Magna Dividend Reinvestment Plan and the Magna Employee Stock Purchase Plan and
1,337,194 shares of Magna Common Stock subject to outstanding options under the
Magna Stock Plans, (iii) as provided pursuant to the Stock Option Agreement or
the Magna Rights Agreement, or (iv) pursuant to the 7% Convertible Subordinated
Capital Notes and 8-3/4% Convertible Subordinated Debentures of Magna, there
are no shares of capital stock or other equity securities of Magna outstanding
and no outstanding Rights relating to the capital stock of Magna.

             5.4   MAGNA SUBSIDIARIES.  Magna has disclosed in Section 5.4 of
the Magna Disclosure Memorandum all of the Magna Subsidiaries as of the date of
this Agreement.  Magna or one of its Subsidiaries owns all of the issued and
outstanding shares of capital stock of each Magna Subsidiary.  No equity
securities of any Magna Subsidiary are or may become required to be issued
(other than to another Magna Company) by reason of any Rights, and there are no
Contracts by which any Magna Subsidiary is bound to issue (other than to
another Magna Company) additional shares of its capital stock or Rights or by
which any Magna Company is or may be bound to transfer any shares of the
capital stock of any Magna Subsidiary (other than to another Magna Company).
There are no Contracts relating to the rights of any Magna Company to vote or
to dispose of any shares of the capital stock of any Magna Subsidiary.  All of
the shares of capital stock of each Magna Subsidiary held by a Magna Company
are duly authorized, validly issued, and fully paid and, except as provided in
statutes pursuant to which depository institution Subsidiaries are organized,
nonassessable under the applicable corporation Law of the jurisdiction in which
such Subsidiary is incorporated or organized and are owned by the Magna Company
free and clear of any Lien.  Each Magna Subsidiary is either a bank or a
corporation, and is duly organized, validly existing, and (as to corporations)
in good standing under the Laws of the jurisdiction in which it is incorporated
or organized, and has the corporate power and authority necessary for it to
own, lease, and operate its Assets and to carry on its business as now
conducted.  Each Magna Subsidiary is duly qualified or licensed to transact
business as a foreign corporation in good standing in the States of the United
States and foreign jurisdictions where the character of its Assets or the
nature or conduct of its business requires it to be so qualified or licensed,
except for such jurisdictions in which the failure to be so qualified or
licensed is not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on Magna.  Each Magna Subsidiary that is a depository
institution is an "insured institution" as defined in the Federal Deposit
Insurance Act and applicable regulations thereunder, and the deposits in which
are insured by the Bank Insurance Fund or Savings Association Insurance Fund.





                                     - 9 -
<PAGE>   15


             5.5   SEC FILINGS; FINANCIAL STATEMENTS.

                   (a)    Magna has filed and made available to UPC all forms,
reports, and documents required to be filed by Magna with the SEC since
December 31, 1993 (collectively, the "Magna SEC Reports").  The Magna SEC
Reports (i) at the time filed, complied in all Material respects with the
applicable requirements of the 1933 Act and the 1934 Act, as the case may be
and (ii) did not at the time they were filed (or if amended or superseded by a
filing prior to the date of this Agreement, then on the date of such filing)
contain any untrue statement of a Material fact or omit to state a Material
fact required to be stated in such Magna SEC Reports or necessary in order to
make the statements in such Magna SEC Reports, in light of the circumstances
under which they were made, not misleading.  Except for Magna Subsidiaries that
are registered as a broker, dealer, or investment advisor or filings required
due to fiduciary holdings of the Magna Subsidiaries, none of Magna's
Subsidiaries is required to file any forms, reports, or other documents with
the SEC.

                   (b)    Each of the Magna Financial Statements (including, in
each case, any related notes) contained in the Magna SEC Reports, including any
Magna SEC Reports filed after the date of this Agreement until the Effective
Time, complied or will comply as to form in all Material respects with the
applicable published rules and regulations of the SEC with respect thereto, was
prepared or will be prepared in accordance with GAAP applied on a consistent
basis throughout the periods involved (except as may be indicated in the notes
to such financial statements, or, in the case of unaudited statements, as
permitted by Form 10-Q of the SEC), and fairly presented or will fairly present
the consolidated financial position of Magna and its Subsidiaries as at the
respective dates and the consolidated results of its operations and cash flows
for the periods indicated, except that the unaudited interim financial
statements were or are subject to normal and recurring year-end adjustments
which were not or are not expected to be Material in amount or effect.

             5.6   ABSENCE OF UNDISCLOSED LIABILITIES.  No Magna Company has
any Liabilities that are reasonably likely to have, individually or in the
aggregate, a Material Adverse Effect on Magna, except Liabilities which are
accrued or reserved against in the consolidated balance sheets of Magna as of
September 30, 1997, included in the Magna Financial Statements or reflected in
the notes thereto and except for Liabilities incurred in the ordinary course of
business subsequent to September 30, 1997.  No Magna Company has incurred or
paid any Liability since September 30, 1997, except for such Liabilities
incurred or paid in the ordinary course of business consistent with past
business practice and which are not reasonably likely to have, individually or
in the aggregate, a Material Adverse Effect on Magna.

             5.7   ABSENCE OF CERTAIN CHANGES OR EVENTS.  Since September 30,
1997, except as disclosed in the Magna Financial Statements, (i) there have
been no events, changes, or occurrences which have had, or are reasonably
likely to have, individually or in the aggregate, a Material Adverse Effect on
Magna and (ii) the Magna Companies have conducted their respective businesses
in the ordinary and usual course (excluding the incurrence of expenses in
connection with this Agreement and the transactions contemplated hereby).





                                     - 10 -
<PAGE>   16


             5.8   TAX MATTERS.

                   (a)    All Tax Returns required to be filed by or on behalf
of any of the Magna Companies have been timely filed, or requests for
extensions have been timely filed, granted, and have not expired for periods
ended on or before December 31, 1996, and, to the Knowledge of Magna, all Tax
Returns filed are complete and accurate in all Material respects.  All Tax
Returns for periods ending on or before the date of the most recent fiscal year
end immediately preceding the Effective Time will be timely filed or requests
for extensions will be timely filed.  All Taxes shown on filed Tax Returns have
been paid.  There is no audit examination, deficiency, or refund Litigation
with respect to any Taxes, that is reasonably likely to result in a
determination that would have, individually or in the aggregate, a Material
Adverse Effect on Magna, except to the extent reserved against in the Magna
Financial Statements dated prior to the date of this Agreement.  All Taxes and
other Liabilities due with respect to completed and settled examinations or
concluded Litigation have been paid.

                   (b)    None of the Magna Companies has executed an extension
or waiver of any statute of limitations on the assessment or collection of any
Tax due (excluding such statutes that relate to years currently under
examination by the Internal Revenue Service or other applicable taxing
authorities) that is currently in effect.

                   (c)    Adequate provision for any Taxes due or to become due
for any of the Magna Companies for the period or periods through and including
the date of the respective Magna Financial Statements has been made and is
reflected on such Magna Financial Statements.

                   (d)    Each of the Magna Companies is in compliance with,
and its records contain all information and documents (including properly
completed IRS Forms W-9) necessary to comply with, all applicable information
reporting and Tax withholding requirements under federal, state, and local Tax
Laws, and such records identify with specificity all accounts subject to backup
withholding under Section 3406 of the Internal Revenue Code, except for such
instances of noncompliance and such omissions as are not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on Magna.

                   (e)    None of the Magna Companies has made any payments, is
obligated to make any payments, or is a party to any contract, agreement, or
other arrangement that could obligate it to make any payments that would be
disallowed as a deduction under Section 280G or 162(m) of the Internal Revenue
Code.

                   (f)    There are no Material Liens with respect to Taxes
upon any of the Assets of the Magna Companies.

                   (g)    No Magna Company has filed any consent under Section
341(f) of the Internal Revenue Code concerning collapsible corporations.





                                     - 11 -
<PAGE>   17


             5.9   ASSETS.  The Magna Companies have good and marketable title,
free and clear of all Liens, to all of their respective Assets, except where
the failure to have such good and marketable title is not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on Magna.
All tangible properties used in the businesses of the Magna Companies are in
good condition, reasonable wear and tear excepted, and are usable in the
ordinary course of business consistent with Magna's past practices.  All Assets
which are Material to Magna's business on a consolidated basis, held under
leases or subleases by any of the Magna Companies, are held under valid
Contracts enforceable in accordance with their respective terms (except as
enforceability may be limited by applicable bankruptcy, insolvency,
reorganization, moratorium, or other Laws affecting the enforcement of
creditors' rights generally and except that the availability of the equitable
remedy of specific performance or injunctive relief is subject to the
discretion of the court before which any proceedings may be brought), and each
such Contract is in full force and effect.  The Magna Companies currently
maintain insurance in amounts, scope, and coverage reasonably necessary for
their operations.  None of the Magna Companies has received notice from any
insurance carrier that (i) such insurance will be canceled or that coverage
thereunder will be reduced or eliminated or (ii) premium costs with respect to
such policies of insurance will be substantially increased.  The Assets of the
Magna Companies include all Assets required to operate the business of the
Magna Companies as presently conducted.

             5.10  ENVIRONMENTAL MATTERS.

                   (a)    To the Knowledge of Magna, each Magna Company, its
Participation Facilities, and its Loan Properties are, and have been, in
compliance with all Environmental Laws, except those violations which are not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on Magna.

                   (b)    There is no Litigation pending or, to the Knowledge
of Magna, threatened before any court, governmental agency, or authority, or
other forum in which any Magna Company or any of its Participation Facilities
has been or, with respect to threatened Litigation, may reasonably be expected
to be named as a defendant (i) for alleged noncompliance (including by any
predecessor) with any Environmental Law or (ii) relating to the release into
the environment of any Hazardous Material, whether or not occurring at, on,
under, or involving a site owned, leased, or operated by any Magna Company or
any of its Participation Facilities, except for such Litigation pending or
threatened that is not reasonably likely to have, individually or in the
aggregate, a Material Adverse Effect on Magna.

                   (c)    There is no Litigation pending, or to the Knowledge
of Magna, threatened before any court, governmental agency, or board, or other
forum in which any of its Loan Properties (or Magna in respect of such Loan
Property) has been or, with respect to threatened Litigation, may reasonably be
expected to be named as a defendant or potentially responsible party (i) for
alleged noncompliance (including by any predecessor) with any Environmental Law
or (ii) relating to the release into the environment of any Hazardous Material,
whether or not occurring at, on, under, or involving a Loan Property, except
for such Litigation pending or threatened that is not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on Magna.





                                     - 12 -
<PAGE>   18


                   (d)    To the Knowledge of Magna, there is no reasonable
basis for any Litigation of a type described in subsections (b) or (c), except
such as is not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on Magna.

                   (e)    To the Knowledge of Magna, during the period of (i)
any Magna Company's ownership or operation of any of their respective current
properties, (ii) any Magna Company's participation in the management of any
Participation Facility, or (iii) any Magna Company's holding of a security
interest in a Loan Property, there have been no releases of Hazardous Material
in, on, under, or affecting (or potentially affecting) such properties, except
such as are not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on Magna.  To the Knowledge of Magna, prior to the
period of (i) any Magna Company's ownership or operation of any of their
respective current properties, (ii) any Magna Company's participation in the
management of any Participation Facility, or (iii) any Magna Company's holding
of a security interest in a Loan Property, to the Knowledge of Magna, there
were no releases of Hazardous Material in, on, under, or affecting any such
property, Participation Facility, or Loan Property, except such as are not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on Magna.

             5.11  COMPLIANCE WITH LAWS.  Magna is duly registered as a bank
holding company under the BHC Act.  Each Magna Company has in effect all
Permits necessary for it to own, lease, or operate its Material Assets and to
carry on its business as now conducted, except for those Permits the absence of
which are not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on Magna, and there has occurred no Default under any
such Permit, other than Defaults which are not reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on Magna.  None of
the Magna Companies:

                   (a)    is in violation of any Laws, Orders, or Permits
      applicable to its business or employees conducting its business, except
      for violations which are not reasonably likely to have, individually or
      in the aggregate, a Material Adverse Effect on Magna; and

                   (b)    has received any notification or communication from
      any agency or department of federal, state, or local government or any
      Regulatory Authority or the staff thereof (i) asserting that any Magna
      Company is not in compliance with any of the Laws or Orders which such
      governmental authority or Regulatory Authority enforces, where such
      noncompliance is reasonably likely to have, individually or in the
      aggregate, a Material Adverse Effect on Magna, (ii) threatening to revoke
      any Permits, the revocation of which is reasonably likely to have,
      individually or in the aggregate, a Material Adverse Effect on Magna, or
      (iii) requiring any Magna Company (x) to enter into or consent to the
      issuance of a cease and desist order, formal agreement, directive,
      commitment, or memorandum of understanding, or (y) to adopt any Board
      resolution or similar undertaking, which restricts materially the conduct
      of its business, or in any manner relates to its capital adequacy, its
      credit or reserve policies, its management, or the payment of dividends.





                                     - 13 -
<PAGE>   19


             5.12  LABOR RELATIONS.  No Magna Company is the subject of any
Litigation asserting that it or any other Magna Company has committed an unfair
labor practice (within the meaning of the National Labor Relations Act or
comparable state Law) or seeking to compel it or any other Magna Company to
bargain with any labor organization as to wages or conditions of employment,
nor is any Magna Company a party to or bound by any collective bargaining
agreement, Contract, or other agreement or understanding with a labor union or
labor organization, nor is there any strike or other labor dispute involving
any Magna Company, pending or, to the Knowledge of Magna, threatened, or to the
Knowledge of Magna, is there any activity involving any Magna Company's
employees seeking to certify a collective bargaining unit or engaging in any
other organization activity.

             5.13  EMPLOYEE BENEFIT PLANS.

                   (a)    Magna has disclosed to UPC in writing prior to the
execution of the Agreement and in Section 5.13 of the Magna Disclosure
Memorandum, and has delivered or made available to UPC prior to the execution
of this Agreement correct and complete copies in each case of, all Material
Magna Benefits Plans.  For purposes of this Agreement, "Magna Benefit Plans"
means all pension, retirement, profit-sharing, deferred compensation, stock
option, employee stock ownership, severance pay, vacation, bonus, or other
incentive plan, all other written employee programs or agreements, all medical,
vision, dental, or other health plans, all life insurance plans, and all other
employee benefit plans or fringe benefit plans, including, without limitation,
"employee benefit plans" as that term is defined in Section 3(3) of ERISA
maintained by, sponsored in whole or in part by, or contributed to by, any
Magna Company for the benefit of employees, retirees, dependents, spouses,
directors, independent contractors, or other beneficiaries and under which
employees, retirees, dependents, spouses, directors, independent contractors,
or other beneficiaries are eligible to participate.  Any of the Magna Benefit
Plans which is an "employee welfare benefit plan," as that term is defined in
Section 3(l) of ERISA, or an "employee pension benefit plan," as that term is
defined in Section 3(2) of ERISA, is referred to herein as a "Magna ERISA
Plan."  Any Magna ERISA Plan which is also a "defined benefit plan" (as defined
in Section 414(j) of the Internal Revenue Code or Section 3(35) of ERISA) is
referred to herein as a "Magna Pension Plan."  Neither Magna nor any Magna
Company has an "obligation to contribute" (as defined in ERISA Section 4212) to
a "multiemployer plan" (as defined in ERISA Sections 4001(a)(3) and 3(37)(A)).
Each "employee pension benefit plan," as defined in Section 3(2) of ERISA,
maintained by any Magna Company at any time during the last six years that was
intended to qualify under Section 401(a) of the Internal Revenue Code and with
respect to which any Magna Company has any Liability, is disclosed as such in
Section 5.13 of the Magna Disclosure Memorandum.

                   (b)    Magna has delivered or made available to UPC prior to
the execution of this Agreement correct and complete copies of the following
documents: (i) all trust agreements or other funding arrangements for such
Magna Benefit Plans (including insurance contracts), and all amendments
thereto, (ii) with respect to any such Magna Benefit Plans or amendments
thereto, all determination letters, rulings, opinion letters, information
letters, or advisory opinions issued by the Internal Revenue Service, the
United States Department of Labor, or the Pension Benefit Guaranty Corporation
after December 31, 1994, (iii) annual reports or returns, audited or





                                     - 14 -
<PAGE>   20


unaudited financial statements, actuarial valuations and reports, and summary
annual reports prepared for any Magna Benefit Plan with respect to the most
recent plan year, and (iv) the most recent summary plan descriptions and any
modifications thereto.

                   (c)    All Magna Benefit Plans are in compliance with the
applicable terms of ERISA, the Internal Revenue Code, and any other applicable
Laws, the breach or violation of which is reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on Magna.  Each
Magna ERISA Plan which is intended to be qualified under Section 401(a) of the
Internal Revenue Code has received a favorable determination letter from the
Internal Revenue Service, and Magna is not aware of any circumstances which
could reasonably result in revocation of any such favorable determination
letter.  Each trust created under any Magna ERISA Plan has been determined to
be exempt from Tax under Section 501(a) of the Internal Revenue Code and Magna
is not aware of any circumstance which could reasonably result in revocation of
such exemption.  With respect to each Magna Benefit Plan to the Knowledge of
Magna, no event has occurred which could reasonably give rise to a loss of any
intended Tax consequences under the Internal Revenue Code or to any Tax under
Section 511 of the Internal Revenue Code that is reasonably likely,
individually or in the aggregate, to have a Material Adverse Effect on Magna.
There is no Material pending or, to the Knowledge of Magna, threatened
Litigation (other than routine claims for benefits) relating to any Magna ERISA
Plan.

                   (d)    No Magna Company has engaged in a transaction with
respect to any Magna Benefit Plan that, assuming the Taxable Period of such
transaction expired as of the date of this Agreement, would subject any Magna
Company to a Material tax or penalty imposed by either Section 4975 of the
Internal Revenue Code or Section 502(i) of ERISA in amounts which are
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on Magna.  Neither Magna nor, to the Knowledge of Magna, any
administrator or fiduciary of any Magna Benefit Plan (or any agent of any of
the foregoing) has engaged in any transaction, or acted or failed to act in any
manner which could subject Magna to any direct or indirect Liability (by
indemnity or otherwise) for breach of any fiduciary, co-fiduciary, or other
duty under ERISA, where such Liability, individually or in the aggregate, is
reasonably likely to have a Material Adverse Effect on Magna.  Except as
disclosed under Section 5.13 of the Magna Disclosure Memorandum, no oral or
written representation or communication with respect to any aspect of the Magna
Benefit Plans has been made to employees of any Magna Company which is not in
accordance with the written or otherwise preexisting terms and provisions of
such plans, where any Liability with respect to such representation or
disclosure is reasonably likely to have a Material Adverse Effect on Magna.

                   (e)    No Magna Pension Plan has any "unfunded current
liability," as that term is defined in Section 302(d)(8)(A) of ERISA, and the
fair market value of all benefits (whether vested or not) accrued to date by
all present or former participants in such Magna Pension Plan exceeds the
plan's "benefit liabilities" as that term is defined in Section 4001(a)(16) of
ERISA.  For this purpose, the assumptions for valuing plan Assets or
Liabilities shall be the assumptions set forth in the most recent actuarial
valuations and reports with respect to any such Magna Pension Plan.  Since the
date of the most recent actuarial valuation, there has been (i) no Material
change in the financial position or funded status of any Magna Pension Plan,
(ii) no change in the





                                     - 15 -
<PAGE>   21


actuarial assumptions with respect to any Magna Pension Plan, and (iii) no
increase in benefits under any Magna Pension Plan as a result of plan
amendments or changes in applicable Law, any of which is reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on Magna.
Neither any Magna Pension Plan nor any "single-employer plan," within the
meaning of Section 4001(a)(15) of ERISA, currently or formerly maintained by
any Magna Company, or the single-employer plan of any entity which is
considered one employer with Magna under Section 4001 of ERISA or Section 414
of the Internal Revenue Code or Section 302 of ERISA (a "Magna ERISA
Affiliate") has an "accumulated funding deficiency" within the meaning of
Section 412 of the Internal Revenue Code or Section 302 of ERISA (whether or
not waived).  All contributions with respect to a Magna Pension Plan or any
single-employer plan of a Magna ERISA Affiliate have or will be timely made and
there is no lien or expected to be a lien under Internal Revenue Code Section
412(n) or ERISA Section 302(f) or Tax under Internal Revenue Code Section 4971.
No Magna Company has provided, or is required to provide, security to a Magna
Pension Plan or to any single-employer plan of a Magna ERISA Affiliate pursuant
to Section 401(a)(29) of the Internal Revenue Code.  All premiums required to
be paid under ERISA Section 4006 have been timely paid by Magna, except to the
extent any failure would not have a Material Adverse Effect on Magna.

                   (f)    No Liability under Title IV of ERISA has been or is
expected to be incurred by any Magna Company with respect to any defined
benefit plan currently or formerly maintained by any of them or by any Magna
ERISA Affiliate that has not been satisfied in full (other than Liability for
Pension Benefit Guaranty Corporation premiums, which have been paid when due)
except to the extent any failure would not have a Material Adverse Effect on
Magna.

                   (g)    Except as set forth in Section 5.13(g) of the Magna
Disclosure Memorandum, no Magna Company has any obligations for retiree health
and retiree life benefits under any of the Magna Benefit Plans other than with
respect to benefit coverage mandated by applicable Law.

                   (h)    Except as set forth in Section 5.13(h) of the Magna
Disclosure Memorandum, neither the execution and delivery of this Agreement nor
the consummation of the transactions contemplated hereby will, by themselves,
(i) result in any payment (including, without limitation, severance, golden
parachute, or otherwise) becoming due to any director or any employee of any
Magna Company from any Magna Company under any Magna Benefit Plan or otherwise,
(ii) increase any benefits otherwise payable under any Magna Benefit Plan, or
(iii) result in any acceleration of the time of payment or vesting of any such
benefit.

             5.14  MATERIAL CONTRACTS.  Except as set forth in Section 5.14 of
the Magna Disclosure Memorandum, none of the Magna Companies, nor any of their
respective Assets, businesses, or operations, is a party to, or is bound or
affected by, or receives benefits under, (i) any employment, severance,
termination, consulting, or retirement Contract providing for aggregate
payments to any Person in any calendar year in excess of $100,000, (ii) any
Contract relating to the borrowing of money by any Magna Company or the
guarantee by any Magna Company of any such obligation (other than Contracts
evidencing deposit liabilities, purchases of federal funds, fully-secured
repurchase agreements, and Federal Home Loan Bank advances of





                                     - 16 -
<PAGE>   22


depository institution Subsidiaries, trade payables, and Contracts relating to
borrowings or guarantees made in the ordinary course of business), and (iii)
any other Contract or amendment thereto that would be required to be filed as
an exhibit to a Form 10-K filed by Magna with the SEC as of the date of this
Agreement that has not been filed as an exhibit to Magna's Form 10-K filed for
the fiscal year ended December 31, 1996, or in another SEC Document (together
with all Contracts referred to in Sections 5.9 and 5.13(a) of this Agreement,
the "Magna Contracts").  With respect to each Magna Contract:  (i) the Contract
is in full force and effect; (ii) no Magna Company is in Default thereunder,
other than Defaults which are not reasonably likely to have, individually or in
the aggregate, a Material Adverse Effect on Magna; (iii) no Magna Company has
repudiated or waived any Material provision of any such Contract; and (iv) no
other party to any such Contract is, to the Knowledge of Magna, in Default in
any respect, other than Defaults which are not reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on Magna, or has
repudiated or waived any Material provision thereunder.

             5.15  LEGAL PROCEEDINGS.

                   (a)    There is no Litigation instituted or pending, or, to
the Knowledge of Magna, threatened (or unasserted but considered probable of
assertion and which if asserted would have at least a reasonable probability of
an unfavorable outcome to any Magna Company) against any Magna Company, or
against any Asset, employee benefit plan, interest, or right of any of them,
that is reasonably likely to have, individually or in the aggregate, a Material
Adverse Effect on Magna, nor are there any Orders of any Regulatory
Authorities, other governmental authorities, or arbitrators outstanding against
any Magna Company, that are reasonably likely to have, individually or in the
aggregate, a Material Adverse Effect on Magna.

                   (b)    Section 5.15(b) of the Magna Disclosure Memorandum
includes a summary report of all Litigation as of the date of this Agreement to
which any Magna Company is a party and which names a Magna Company as a
defendant or cross-defendant and where the maximum exposure is estimated to be
$250,000 or more.

             5.16  REPORTS.  Since January 1, 1994, or the date of organization
if later, each Magna Company has timely filed all reports and statements,
together with any amendments required to be made with respect thereto, that it
was required to file with any Regulatory Authorities, except failures to file
which are not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on Magna.  As of their respective dates, each of such
reports and documents, including the financial statements, exhibits, and
schedules thereto, complied in all Material respects with all applicable Laws.

             5.17  STATEMENTS TRUE AND CORRECT.  None of the information
supplied or to be supplied by any Magna Company regarding Magna for inclusion
in the Registration Statement to be filed by UPC with the SEC will, when the
Registration Statement becomes effective, be false or misleading with respect
to any Material fact, or contain any untrue statement of a Material fact, or
omit to state any Material fact required to be stated thereunder or necessary
to make the statements therein not misleading.  None of the information
supplied or to be supplied by any Magna Company for inclusion in the Joint
Proxy Statement to be mailed to UPC's and Magna's





                                     - 17 -
<PAGE>   23


stockholders in connection with the Stockholders' Meetings will, when first
mailed to the stockholders of UPC and Magna, be false or misleading with
respect to any Material fact, or contain any misstatement of Material fact, or
omit to state any Material fact required to be stated thereunder or necessary
to make the statements therein, in light of the circumstances under which they
were made, not misleading, or, in the case of the Joint Proxy Statement or any
amendment thereof or supplement thereto, at the time of the Stockholders'
Meetings, be false or misleading with respect to any Material fact, or omit to
state any Material fact required to be stated thereunder or necessary to
correct any Material statement in any earlier communication with respect to the
solicitation of any proxy for the Stockholders' Meetings.  All documents that
any Magna Company is responsible for filing with any Regulatory Authority in
connection with the transactions contemplated hereby will comply as to form in
all Material respects with the provisions of applicable Law.

             5.18  ACCOUNTING, TAX, AND REGULATORY MATTERS.  No Magna Company
has taken or agreed to take any action, and Magna has no Knowledge of any fact
or circumstance that is reasonably likely to (i) prevent the transactions
contemplated hereby, including the Merger, from qualifying for
pooling-of-interests accounting treatment or as a reorganization within the
meaning of Section 368(a) of the Internal Revenue Code or (ii) materially
impede or delay receipt of any Consents of Regulatory Authorities referred to
in Section 9.1(b) of this Agreement or result in the imposition of a condition
or restriction of the type referred to in the last sentence of such Section.

             5.19  STATE TAKEOVER LAWS.  Each Magna Company has taken all
necessary action to exempt the transactions contemplated by this Agreement and
the Plan of Merger from any applicable "moratorium," "control share," "fair
price," "business combination," or other anti-takeover laws and regulations,
including Section 203 of the DGCL, of the State of Delaware (collectively,
"Takeover Laws").

             5.20  CHARTER PROVISIONS.  Each Magna Company has taken all action
so that the entering into of this Agreement and the Plan of Merger and the
consummation of the Merger and the other transactions contemplated by this
Agreement and the Plan of Merger do not and will not result in the grant of any
rights to any Person under the Articles of Incorporation, Bylaws, or other
governing instruments of any Magna Company or restrict or impair the ability of
UPC or any of its Subsidiaries to vote, or otherwise to exercise the rights of
a stockholder with respect to, shares of any Magna Company that may be directly
or indirectly acquired or controlled by it.

             5.21  RIGHTS AGREEMENT.  Magna has taken all necessary action
(including, if required, redeeming all of the outstanding Preferred Stock
Purchase Rights or amending or terminating the Magna Rights Agreement) so that
the entering into of this Agreement and the Plan of Merger, the acquisition of
shares pursuant to, or other exercise of rights under, the Stock Option
Agreement and consummation of the Merger and the other transactions
contemplated hereby and thereby do not and will not result in any Person
becoming able to exercise any Preferred Stock Purchase Rights under the Magna
Rights Agreement or enabling or requiring the Preferred Stock Purchase Rights
to be separated from the shares of Magna Common Stock to which they are
attached or to be triggered or to become exercisable.





                                     - 18 -
<PAGE>   24


             5.22  DERIVATIVES.  All interest rate swaps, caps, floors, option
agreements, futures and forward contracts, and other similar risk management
arrangements, whether entered into for Magna's own account, or for the account
of one or more the Magna Subsidiaries or their customers, were entered into (i)
in accordance with prudent business practices and all applicable Laws and (ii)
with counterparties believed to be financially responsible.

             5.23  YEAR 2000.  Magna has disclosed to UPC a complete and
accurate copy of Magna's plan, including an estimate of the anticipated
associated costs, for implementing modifications to Magna's hardware, software,
and computer systems, chips, and microprocessors, to ensure proper execution
and accurate processing of all date-related data, whether from years in the
same century or in different centuries.  Between the date of this Agreement and
the Effective Time, Magna shall endeavor to continue its efforts to implement
such plan.

                                   ARTICLE 6
                     REPRESENTATIONS AND WARRANTIES OF UPC

             UPC hereby represents and warrants to Magna as follows:

             6.1   ORGANIZATION, STANDING, AND POWER.  UPC is a corporation
duly organized, validly existing, and in good standing under the Laws of the
State of Tennessee, and has the corporate power and authority to carry on its
business as now conducted and to own, lease, and operate its Material Assets.
UPC is duly qualified or licensed to transact business as a foreign corporation
in good standing in the States of the United States and foreign jurisdictions
where the character of its Assets or the nature or conduct of its business
requires it to be so qualified or licensed, except for such jurisdictions in
which the failure to be so qualified or licensed is not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on UPC.

             6.2   AUTHORITY; NO BREACH BY AGREEMENT.

                   (a)    UPC has the corporate power and authority necessary
to execute, deliver, and perform its obligations under this Agreement and to
consummate the transactions contemplated hereby.  The execution, delivery, and
performance of this Agreement and the consummation of the transactions
contemplated herein, including the Merger, have been duly and validly
authorized by all necessary corporate action in respect thereof on the part of
UPC, subject to the approval of (i) the UPC Charter Amendment and (ii) the
issuance of the shares of UPC Common Stock pursuant to the Merger by holders of
the requisite number of shares of UPC Common Stock required by Law, which is
the only stockholder vote required for the consummation of the Merger by UPC.
Subject to such requisite stockholder approval, this Agreement represents a
legal, valid, and binding obligation of UPC, enforceable against UPC in
accordance with its terms (except in all cases as such enforceability may be
limited by applicable bankruptcy, insolvency, reorganization, receivership,
conservatorship, moratorium, or similar Laws affecting the enforcement of
creditors' rights generally and except that the availability of the equitable
remedy of specific performance or injunctive relief is subject to the
discretion of the court before which any proceeding may be brought).





                                     - 19 -
<PAGE>   25


                   (b)    Neither the execution and delivery of this Agreement
by UPC, nor the consummation by UPC of the transactions contemplated hereby,
nor compliance by UPC with any of the provisions hereof, will (i) conflict with
or result in a breach of any provision of UPC's Restated Charter of
Incorporation or Bylaws (subject to the amendment of the UPC Restated Charter
of Incorporation pursuant to the UPC Charter Amendment to increase the number
of authorized shares of UPC Common Stock), (ii) constitute or result in a
Default under, or require any Consent pursuant to, or result in the creation of
any Lien on any Asset of any UPC Company under, any Contract or Permit of any
UPC Company, where such Default or Lien, or any failure to obtain such Consent,
is reasonably likely to have, individually or in the aggregate, a Material
Adverse Effect on UPC, or (iii) subject to receipt of the requisite Consents
referred to in Section 9.1(b) of this Agreement, violate any Law or Order
applicable to any UPC Company or any of their respective Material Assets.

                   (c)    Other than in connection or compliance with the
provisions of the Securities Laws, applicable state corporate and securities
Laws, and rules of the NYSE, and other than Consents required from Regulatory
Authorities, and other than notices to or filings with the Internal Revenue
Service or the Pension Benefit Guaranty Corporation with respect to any
employee benefit plans, or under the HSR Act, and other than Consents, filings,
or notifications which, if not obtained or made, are not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on UPC, no
notice to, filing with, or Consent of, any public body or authority is
necessary for the consummation by UPC of the Merger and the other transactions
contemplated in this Agreement.

             6.3   CAPITAL STOCK.  The authorized capital stock of UPC consists
of (i) 100,000,000 shares of UPC Common Stock, of which 81,650,946 shares are
issued and outstanding as of December 31, 1997 and (ii) 10,000,000 shares of
UPC Preferred Stock, of which 2,188,358 shares of UPC Series E Preferred Stock
are issued and outstanding.  All of the issued and outstanding shares of UPC
Capital Stock are, and (subject to the amendment of UPC's Restated Charter of
Incorporation pursuant to the UPC Charter Amendment) all of the shares of UPC
Common Stock to be issued in exchange for shares of Magna Common Stock upon
consummation of the Merger when issued in accordance with the terms of this
Agreement, will be, duly and validly issued and outstanding and fully paid and
nonassessable under the TBCA.  None of the outstanding shares of UPC Capital
Stock has been, and none of the shares of UPC Common Stock to be issued in
exchange for shares of Magna Common Stock upon consummation of the Merger will
be, issued in violation of any preemptive rights of the current or past
stockholders of UPC.

             6.4   UPC SUBSIDIARIES.  Except with respect to Capital Factors,
Inc., UPC or one of its Subsidiaries owns all of the issued and outstanding
shares of capital stock of each UPC Subsidiary.  No equity securities of any
UPC Subsidiary are or may become required to be issued (other than to another
UPC Company) by reason of any Rights, and there are no Contracts by which any
UPC Subsidiary is bound to issue (other than to another UPC Company) additional
shares of its capital stock or Rights or by which any UPC Company is or may be
bound to transfer any shares of the capital stock of any UPC Subsidiary (other
than to another UPC Company).





                                     - 20 -
<PAGE>   26


There are no Contracts relating to the rights of any UPC Company to vote or to
dispose of any shares of the capital stock of any UPC Subsidiary.  All of the
shares of capital stock of each UPC Subsidiary held by a UPC Company are fully
paid and, except as provided in statutes pursuant to which depository
institution Subsidiaries are organized, nonassessable under the applicable
corporation Law of the jurisdiction in which such Subsidiary is incorporated or
organized and are owned by the UPC Company free and clear of any Lien.  Each
UPC Subsidiary is either a bank or a corporation, and is duly organized,
validly existing, and (as to corporations) in good standing under the Laws of
the jurisdiction in which it is incorporated or organized, and has the
corporate power and authority necessary for it to own, lease, and operate its
Assets and to carry on its business as now conducted.  Each UPC Subsidiary is
duly qualified or licensed to transact business as a foreign corporation in
good standing in the States of the United States and foreign jurisdictions
where the character of its Assets or the nature or conduct of its business
requires it to be so qualified or licensed, except for such jurisdictions in
which the failure to be so qualified or licensed is not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on UPC.  Each
UPC Subsidiary that is a depository institution is an "insured institution" as
defined in the Federal Deposit Insurance Act and applicable regulations
thereunder, and the deposits in which are insured by the Bank Insurance Fund or
Savings Association Insurance Fund.

             6.5   SEC FILINGS; FINANCIAL STATEMENTS.

                   (a)    UPC has filed and made available to Magna all forms,
reports, and documents required to be filed by UPC with the SEC since December
31, 1993 (collectively, the "UPC SEC Reports").  The UPC SEC Reports (i) at the
time filed, complied in all Material respects with the applicable requirements
of the 1933 Act and the 1934 Act, as the case may be and (ii) did not at the
time they were filed (or if amended or superseded by a filing prior to the date
of this Agreement, then on the date of such filing) contain any untrue
statement of a Material fact or omit to state a Material fact required to be
stated in such UPC SEC Reports or necessary in order to make the statements in
such UPC SEC Reports, in light of the circumstances under which they were made,
not misleading.  Except for UPC Subsidiaries that are registered as a broker,
dealer, or investment advisor or filings required due to fiduciary holdings of
the UPC Subsidiaries, none of UPC Subsidiaries is required to file any forms,
reports, or other documents with the SEC.

                   (b)    Each of the UPC Financial Statements (including, in
each case, any related notes) contained in the UPC SEC Reports, including any
UPC SEC Reports filed after the date of this Agreement until the Effective
Time, complied or will comply as to form in all Material respects with the
applicable published rules and regulations of the SEC with respect thereto, was
or will be prepared in accordance with GAAP applied on a consistent basis
throughout the periods involved (except as may be indicated in the notes to
such financial statements or, in the case of unaudited statements, as permitted
by Form 10-Q of the SEC), and fairly presented or will fairly present the
consolidated financial position of UPC and its Subsidiaries as at the
respective dates and the consolidated results of its operations and cash flows
for the periods indicated, except that the unaudited interim financial
statements were or are subject to normal and recurring year-end adjustments
which were not or are not expected to be Material in amount or effect.





                                     - 21 -
<PAGE>   27


             6.6   ABSENCE OF UNDISCLOSED LIABILITIES.  No UPC Company has any
Liabilities that are reasonably likely to have, individually or in the
aggregate, a Material Adverse Effect on UPC, except Liabilities which are
accrued or reserved against in the consolidated balance sheets of UPC as of
September 30, 1997, included in the UPC Financial Statements or reflected in
the notes thereto and except for Liabilities incurred in the ordinary course of
business subsequent to September 30, 1997.  No UPC Company has incurred or paid
any Liability since September 30, 1997, except for such Liabilities incurred or
paid in the ordinary course of business consistent with past business practice
and which are not reasonably likely to have, individually or in the aggregate,
a Material Adverse Effect on UPC.

             6.7   ABSENCE OF CERTAIN CHANGES OR EVENTS.  Since September 30,
1997, except as disclosed in the UPC Financial Statements delivered prior to
the date of this Agreement, (i) there have been no events, changes or
occurrences which have had, or are reasonably likely to have, individually or
in the aggregate, a Material Adverse Effect on UPC and (ii) the UPC Companies
have conducted their respective businesses in the ordinary and usual course
(excluding the incurrence of expenses in connection with this Agreement and the
transactions contemplated hereby).

             6.8   TAX MATTERS.

                   (a)    All Tax Returns required to be filed by or on behalf
of any of the UPC Companies have been timely filed, or requests for extensions
have been timely filed, granted, and have not expired for periods ended on or
before December 31, 1996, and, to the Knowledge of UPC, all Tax Returns filed
are complete and accurate in all Material respects.  All Tax Returns for
periods ending on or before the date of the most recent fiscal year end
immediately preceding the Effective Time will be timely filed or requests for
extensions will be timely filed.  All Taxes shown on filed Tax Returns have
been paid.  There is no audit examination, deficiency, or refund Litigation
with respect to any Taxes, that is reasonably likely to result in a
determination that would have, individually or in the aggregate, a Material
Adverse Effect on UPC, except to the extent reserved against in the UPC
Financial Statements dated prior to the date of this Agreement.  All Taxes and
other Liabilities due with respect to completed and settled examinations or
concluded Litigation have been paid.

                   (b)    None of the UPC Companies has executed an extension
or waiver of any statute of limitations on the assessment or collection of any
Tax due (excluding such statutes that relate to years currently under
examination by the Internal Revenue Service or other applicable taxing
authorities) that is currently in effect.

                   (c)    Adequate provision for any Taxes due or to become due
for any of the UPC Companies for the period or periods through and including
the date of the respective UPC Financial Statements has been made and is
reflected on such UPC Financial Statements.

                   (d)    Each of the UPC Companies is in compliance with, and
its records contain all information and documents (including properly completed
IRS Forms W-9) necessary to comply with, all applicable information reporting
and Tax withholding requirements under federal,





                                     - 22 -
<PAGE>   28


state, and local Tax Laws, and such records identify with specificity all
accounts subject to backup withholding under Section 3406 of the Internal
Revenue Code, except for such instances of noncompliance and such omissions as
are not reasonably likely to have, individually or in the aggregate, a Material
Adverse Effect on UPC.

                   (e)    None of the UPC Companies has made any payments, is
obligated to make any payments, or is a party to any contract, agreement, or
other arrangement that could obligate it to make any payments that would be
disallowed as a deduction under Section 280G or 162(m) of the Internal Revenue
Code.

                   (f)    There are no Material Liens with respect to Taxes
upon any of the Assets of the UPC Companies.

                   (g)    No UPC Company has filed any consent under Section
341(f) of the Internal Revenue Code concerning collapsible corporations.


             6.9   ASSETS.  The UPC Companies have good and marketable title,
free and clear of all Liens, to all of their respective Assets, except where
the failure to have such good and marketable title is not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on UPC.  All
tangible properties used in the businesses of the UPC Companies are in good
condition, reasonable wear and tear excepted, and are usable in the ordinary
course of business consistent with UPC's past practices.  All Assets which are
Material to UPC's business on a consolidated basis, held under leases or
subleases by any of the UPC Companies, are held under valid Contracts
enforceable in accordance with their respective terms (except as enforceability
may be limited by applicable bankruptcy, insolvency, reorganization,
moratorium, or other Laws affecting the enforcement of creditors' rights
generally and except that the availability of the equitable remedy of specific
performance or injunctive relief is subject to the discretion of the court
before which any proceedings may be brought), and each such Contract is in full
force and effect.  The UPC Companies currently maintain insurance similar in
amounts, scope, and coverage reasonably necessary for their operations.  None
of the UPC Companies has received notice from any insurance carrier that (i)
such insurance will be canceled or that coverage thereunder will be reduced or
eliminated or (ii) premium costs with respect to such policies of insurance
will be substantially increased.  The Assets of the UPC Companies include all
Assets required to operate the business of the UPC Companies as presently
conducted.

             6.10  ENVIRONMENTAL MATTERS.

                   (a)    To the Knowledge of UPC, each UPC Company, its
Participation Facilities, and its Loan Properties are, and have been, in
compliance with all Environmental Laws, except those violations which are not
reasonably likely to have, individually or in the aggregate, a Material Adverse
Effect on UPC.

                   (b)    There is no Litigation pending or, to the Knowledge
of UPC, threatened before any court, governmental agency, or authority, or
other forum in which any UPC Company





                                     - 23 -
<PAGE>   29


or any of its Participation Facilities has been or, with respect to threatened
Litigation, may reasonably be expected to be named as a defendant (i) for
alleged noncompliance (including by any predecessor) with any Environmental Law
or (ii) relating to the release into the environment of any Hazardous Material,
whether or not occurring at, on, under, or involving a site owned, leased, or
operated by any UPC Company or any of its Participation Facilities, except for
such Litigation pending or threatened that is not reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on UPC.

                   (c)    There is no Litigation pending or, to the Knowledge
of UPC, threatened before any court, governmental agency, or board, or other
forum in which any of its Loan Properties (or UPC in respect of such Loan
Property) has been or, with respect to threatened Litigation, may reasonably be
expected to be named as a defendant or potentially responsible party (i) for
alleged noncompliance (including by any predecessor) with any Environmental Law
or (ii) relating to the release into the environment of any Hazardous Material,
whether or not occurring at, on, under, or involving a Loan Property, except
for such Litigation pending or threatened that is not reasonably likely to
have, individually or in the aggregate, a Material Adverse Effect on UPC.

                   (d)    To the Knowledge of UPC, there is no reasonable basis
for any Litigation of a type described in subsections (b) or (c), except such
as is not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on UPC.

                   (e)    To the Knowledge of UPC, during the period of (i) any
UPC Company's ownership or operation of any of their respective current
properties, (ii) any UPC Company's participation in the management of any
Participation Facility, or (iii) any UPC Company's holding of a security
interest in a Loan Property, there have been no releases of Hazardous Material
in, on, under, or affecting (or potentially affecting) such properties, except
such as are not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on UPC.  To the Knowledge of UPC, prior to the period
of (i) any UPC Company's ownership or operation of any of their respective
current properties, (ii) any UPC Company's participation in the management of
any Participation Facility, or (iii) any UPC Company's holding of a security
interest in a Loan Property, to the Knowledge of UPC, there were no releases of
Hazardous Material in, on, under, or affecting any such property, Participation
Facility, or Loan Property, except such as are not reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on UPC.

             6.11  COMPLIANCE WITH LAWS.  UPC is duly registered as a bank
holding company under the BHC Act.  Each UPC Company has in effect all Permits
necessary for it to own, lease, or operate its Material Assets and to carry on
its business as now conducted, except for those Permits the absence of which
are not reasonably likely to have, individually or in the aggregate, a Material
Adverse Effect on UPC, and there has occurred no Default under any such Permit,
other than Defaults which are not reasonably likely to have, individually or in
the aggregate, a Material Adverse Effect on UPC.  None of the UPC Companies:





                                     - 24 -
<PAGE>   30


                   (a)    is in violation of any Laws, Orders, or Permits
      applicable to its business or employees conducting its business, except
      for violations which are not reasonably likely to have, individually or
      in the aggregate, a Material Adverse Effect on UPC; and

                   (b)    has received any notification or communication from
      any agency or department of federal, state, or local government or any
      Regulatory Authority or the staff thereof (i) asserting that any UPC
      Company is not in compliance with any of the Laws or Orders which such
      governmental authority or Regulatory Authority enforces, where such
      noncompliance is reasonably likely to have, individually or in the
      aggregate, a Material Adverse Effect on UPC, (ii) threatening to revoke
      any Permits, the revocation of which is reasonably likely to have,
      individually or in the aggregate, a Material Adverse Effect on UPC, or
      (iii) requiring any UPC Company (x) to enter into or consent to the
      issuance of a cease and desist order, formal agreement, directive,
      commitment, or memorandum of understanding, or (y) to adopt any Board
      resolution or similar undertaking, which restricts materially the conduct
      of its business, or in any manner relates to its capital adequacy, its
      credit or reserve policies, its management, or the payment of dividends.

             6.12  LABOR RELATIONS.  No UPC Company is the subject of any
Litigation asserting that it or any other UPC Company has committed an unfair
labor practice (within the meaning of the National Labor Relations Act or
comparable state Law) or seeking to compel it or any other UPC Company to
bargain with any labor organization as to wages or conditions of employment,
nor is any UPC Company a party to or bound by any collective bargaining
agreement, Contract, or other agreement or understanding with a labor union or
labor organization, nor is there any strike or other labor dispute involving
any UPC Company, pending or, to the Knowledge of UPC, threatened, or to the
Knowledge of UPC, is there any activity involving any UPC Company's employees
seeking to certify a collective bargaining unit or engaging in any other
organization activity.

             6.13  LEGAL PROCEEDINGS.  There is no Litigation instituted or
pending, or, to the Knowledge of UPC, threatened (or unasserted but considered
probable of assertion and which if asserted would have at least a reasonable
probability of an unfavorable outcome to any UPC Company) against any UPC
Company, or against any Asset, employee benefit plan, interest, or right of any
of them, that is reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on UPC, nor are there any Orders of any Regulatory
Authorities, other governmental authorities, or arbitrators outstanding against
any UPC Company, that are reasonably likely to have, individually or in the
aggregate, a Material Adverse Effect on UPC.

             6.14  REPORTS.  Since January 1, 1994, or the date of organization
if later, each UPC Company has timely filed all reports and statements,
together with any amendments required to be made with respect thereto, that it
was required to file with any Regulatory Authorities, except failures to file
which are not reasonably likely to have, individually or in the aggregate, a
Material Adverse Effect on UPC.  As of their respective dates, each of such
reports and documents, including the financial statements, exhibits, and
schedules thereto, complied in all Material respects with all applicable Laws.





                                     - 25 -
<PAGE>   31


             6.15  STATEMENTS TRUE AND CORRECT.  None of the information
supplied or to be supplied by any UPC Company regarding UPC for inclusion in
the Registration Statement to be filed by UPC with the SEC will, when the
Registration Statement becomes effective, be false or misleading with respect
to any Material fact, or contain any untrue statement of a Material fact, or
omit to state any Material fact required to be stated thereunder or necessary
to make the statements therein not misleading.  None of the information
supplied or to be supplied by any UPC Company for inclusion in the Joint Proxy
Statement to be mailed to Magna's and UPC's stockholders in connection with the
Stockholders' Meetings, will, when first mailed to the stockholders of Magna
and UPC, be false or misleading with respect to any Material fact, or contain
any misstatement of Material fact, or omit to state any Material fact required
to be stated thereunder or necessary to make the statements therein, in light
of the circumstances under which they were made, not misleading, or, in the
case of the Joint Proxy Statement or any amendment thereof or supplement
thereto, at the time of the Stockholders' Meetings, be false or misleading with
respect to any Material fact, or omit to state any Material fact required to be
stated thereunder or necessary to correct any Material statement in any earlier
communication with respect to the solicitation of any proxy for the
Stockholders' Meetings.  All documents that any UPC Company is responsible for
filing with any Regulatory Authority in connection with the transactions
contemplated hereby will comply as to form in all Material respects with the
provisions of applicable Law.

             6.16  ACCOUNTING, TAX, AND REGULATORY MATTERS.  No UPC Company or
any Affiliate thereof has taken or agreed to take any action, and UPC has no
Knowledge of any fact or circumstance that is reasonably likely to (i) prevent
the transactions contemplated hereby, including the Merger, from qualifying for
pooling-of-interests accounting treatment or as a reorganization within the
meaning of Section 368(a) of the Internal Revenue Code or (ii) materially
impede or delay receipt of any Consents of Regulatory Authorities referred to
in Section 9.1(b) of this Agreement or result in the imposition of a condition
or restriction of the type referred to in the last sentence of such Section.

             6.17  EMPLOYEE BENEFIT PLANS.  All UPC Plans are in compliance
with the applicable terms of ERISA, the Internal Revenue Code, and any other
applicable Laws, the breach or violation of which is reasonably likely to have,
individually or in the aggregate, a Material Adverse Effect on UPC.  For
purposes of this Agreement, the term "UPC Plan" means each bonus, incentive
compensation, severance pay, medical or other insurance program, retirement
plan, or other employee benefit plan program, agreement, or arrangement
sponsored, maintained, or contributed to by UPC or any trade or business,
whether or not incorporated, that together with UPC or any of its Subsidiaries
would be deemed a "single employer" under Section 4001 of ERISA or Section 414
of the Internal Revenue Code (a "UPC ERISA Affiliate") or under which UPC or
any UPC ERISA Affiliate has any Liability or obligation.  No Liability under
Title IV of ERISA has been incurred by UPC or any UPC ERISA Affiliate that has
not been satisfied in full, and no condition exists that presents a Material
risk to UPC or any UPC ERISA Affiliate of incurring any such Liability.  With
respect to any UPC Plan that is subject to Title IV of ERISA, full payment has
been made, or will be made in accordance with Section 404(a)(6) of the Internal
Revenue Code, of all amounts that UPC or any UPC ERISA Affiliate is required to
pay under Section 412 of the Internal Revenue Code or under the terms of the
UPC Plans, and no





                                     - 26 -
<PAGE>   32


accumulated funding deficiency (within the meaning of Section 412 of the
Internal Revenue Code or Section 302 of ERISA, whether or not waived) exists
with respect to any UPC Plan.  There are no Material actions, suits, or claims
pending, or, to the Knowledge of UPC, threatened or anticipated relating to any
UPC Plan.  There has been no Material adverse change in the financial position
or funded status of any UPC Plan that is subject to Title IV of ERISA since the
date of the information relating to the financial position and funded status of
each such plan contained in the most recent Annual Report on  Form 10-K filed
by UPC with the SEC.

             6.18  DERIVATIVES.  All interest rate swaps, caps, floors, option
agreements, futures and forward contracts, and other similar risk management
arrangements, whether entered into for UPC's own account, or for the account of
one or more the UPC Subsidiaries or their customers, were entered into (i) in
accordance with prudent business practices and all applicable Laws and (ii)
with counterparties believed to be financially responsible.

             6.19  YEAR 2000.  UPC has disclosed to Magna a complete and
accurate copy of UPC's plan, including an estimate of the anticipated
associated costs, for implementing modifications to UPC's hardware, software,
and computer systems, chips, and microprocessors, to ensure proper execution
and accurate processing of all date-related data, whether from years in the
same century or in different centuries.  Between the date of this Agreement and
the Effective Time, UPC shall endeavor to continue its efforts to implement
such plan.


                                   ARTICLE 7
                    CONDUCT OF BUSINESS PENDING CONSUMMATION

             7.1   AFFIRMATIVE COVENANTS OF BOTH PARTIES.  From the date of
this Agreement until the earlier of the Effective Time or the termination of
this Agreement, unless the prior written consent of the other Party shall have
been obtained, and except as otherwise expressly contemplated herein, each
Party shall and shall cause each of its Subsidiaries to (i) operate its
business only in the usual, regular, and ordinary course, (ii) preserve intact
its business organization and Assets and maintain its rights and franchises,
(iii) use its reasonable efforts to maintain its current employee
relationships, and (iv) take no action which would (a) adversely affect the
ability of any Party to obtain any Consents required for the transactions
contemplated hereby without imposition of a condition or restriction of the
type referred to in the last sentence of Section 9.1(b) of this Agreement, or
(b) adversely affect the ability of any Party to perform its covenants and
agreements under this Agreement; provided that in the case of UPC, the
provisions of this Section 7.1 (other than the provisions of clause (iv) above)
shall not be deemed to preclude UPC from continuing to implement its program of
acquiring unaffiliated depository and nondepository institutions.

             7.2   NEGATIVE COVENANTS OF MAGNA.  From the date of this
Agreement until the earlier of the Effective Time or the termination of this
Agreement, Magna covenants and agrees that it will not do or agree or commit to
do, or permit any of its Subsidiaries to do or agree or commit to do, any of
the following without the prior written consent of the chief executive officer
or chief financial officer of UPC, which consent shall not be unreasonably
withheld:





                                     - 27 -
<PAGE>   33


                   (a)    amend the Articles of Incorporation, Bylaws, or other
      governing instruments of any Magna Company or, except as expressly
      contemplated by this Agreement, the Magna Rights Agreement, or

                   (b)    incur, guarantee, or otherwise become responsible
      for, any additional debt obligation or other obligation for borrowed
      money (other than indebtedness of a Magna Company to another Magna
      Company) in excess of an aggregate of $1,000,000 (for the Magna Companies
      on a consolidated basis), except in the ordinary course of the business
      consistent with past practices (which shall include, for Magna
      Subsidiaries that are depository institutions, creation of deposit
      liabilities, purchases of federal funds, advances from the Federal
      Reserve Bank or Federal Home Loan Bank, and entry into repurchase
      agreements fully secured by U.S. government or agency securities), or
      impose, or suffer the imposition, on any Asset of any Magna Company of
      any Lien or permit any such Lien to exist (other than in connection with
      deposits, repurchase agreements, bankers acceptances, "treasury tax and
      loan" accounts established in the ordinary course of business, the
      satisfaction of legal requirements in the exercise of trust powers, and
      Liens in effect as of the date hereof that are disclosed in the Magna
      Disclosure Memorandum); or

                   (c)    repurchase, redeem, or otherwise acquire or exchange
      (other than exchanges in the ordinary course under employee benefit
      plans), directly or indirectly, any shares, or any securities convertible
      into any shares, of the capital stock of any Magna Company, or declare or
      pay any dividend or make any other distribution in respect of Magna's
      capital stock, provided that Magna may (to the extent legally and
      contractually permitted to do so), but shall not be obligated to, declare
      and pay regular quarterly cash dividends on the shares of (i) Magna
      Common Stock at a rate of $0.28 per share and (ii) Magna Class B
      Preferred Stock at a rate of $0.375 per share, in each case with usual
      and regular record and payment dates in accordance with past practice as
      disclosed in Section 7.2(c) of the Magna Disclosure Memorandum and such
      dates may not be changed without the prior written consent of UPC;
      provided, that, notwithstanding the provisions of Section 1.3 of this
      Agreement, the Parties shall cooperate in selecting the Effective Time to
      ensure that, with respect to the quarterly period in which the Effective
      Time occurs, the holders of Magna Common Stock do not receive both a
      dividend in respect of their Magna Common Stock and a dividend in respect
      of UPC Common Stock or fail to receive any dividend; or

                   (d)    except for this Agreement, or pursuant to the Stock
      Option Agreement or pursuant to the exercise of Rights outstanding as of
      the date of this Agreement and pursuant to the terms thereof in existence
      on the date of this Agreement, issue, sell, pledge, encumber, authorize
      the issuance of, enter into any Contract to issue, sell, pledge,
      encumber, or authorize the issuance of, or otherwise permit to become
      outstanding, any additional shares of Magna Common Stock or any other
      capital stock of any Magna Company, or any stock appreciation rights, or
      any option, warrant, conversion, or other right to acquire any such
      stock, or any security convertible into any such stock; or





                                     - 28 -
<PAGE>   34


                   (e)    adjust, split, combine, or reclassify any capital
      stock of any Magna Company or issue or authorize the issuance of any
      other securities in respect of or in substitution for shares of Magna
      Common Stock, or sell, lease, mortgage, or otherwise dispose of or
      otherwise encumber (i) any shares of capital stock of any Magna
      Subsidiary (unless any such shares of stock are sold or otherwise
      transferred to another Magna Company) or (ii) any Asset having a book
      value in excess of $250,000 other than in the ordinary course of business
      for reasonable and adequate consideration; or

                   (f)    except for purchases of investment securities
      acquired in the ordinary course of business consistent with past
      practice, purchase any securities or make any Material investment, either
      by purchase of stock or securities, contributions to capital, Asset
      transfers, or purchase of any Assets, in any Person other than a
      wholly-owned Magna Subsidiary, or otherwise acquire direct or indirect
      control over any Person, other than in connection with (i) foreclosures
      in the ordinary course of business, (ii) acquisitions of control by a
      depository institution Subsidiary in its fiduciary capacity, (iii) the
      creation of new wholly-owned Subsidiaries organized to conduct or
      continue activities otherwise permitted by this Agreement, or (iv),
      subject to the provisions of Section 8.17 of this Agreement, that certain
      Agreement and Plan of Merger, dated as of November 19, 1997, as amended
      December 4, 1997, by and between Magna and Charter Financial, Inc.
      ("Charter") (the "Charter Agreement"); or

                   (g)    grant any increase in compensation or benefits to the
      employees or officers of any Magna Company, except in accordance with the
      ordinary course of business consistent with past practice or as required
      by Law; pay any severance or termination pay or any bonus other than
      pursuant to written policies or written Contracts in effect on the date
      of this Agreement; enter into or amend any severance agreements with
      officers of any Magna Company; grant any Material increase in fees or
      other increases in compensation or other benefits to directors of any
      Magna Company except in accordance with the ordinary course of business
      consistent with past practice; or voluntarily accelerate the vesting of
      any stock options or other stock-based compensation or employee benefits;
      or

                   (h)    enter into or amend any employment Contract between
      any Magna Company and any Person (unless such amendment is required by
      Law or a pre-existing contractual obligation) that the Magna Company does
      not have the unconditional right to terminate without Liability (other
      than Liability for services already rendered), at any time on or after
      the Effective Time; or

                   (i)    adopt any new employee benefit plan of any Magna
      Company or make any Material change in or to any existing employee
      benefit plans of any Magna Company other than any such change that is
      required by Law or that, in the opinion of counsel, is necessary or
      advisable to maintain the tax qualified status of any such plan; or

                   (j)    make any significant change in any Tax or accounting
      methods or systems of internal accounting controls, except as may be
      appropriate to conform to changes in Tax Laws or regulatory accounting
      requirements or GAAP; or





                                     - 29 -
<PAGE>   35


                   (k)    commence any Litigation other than as necessary for
      the prudent operation of its business or settle any Litigation involving
      any Liability of any Magna Company for Material money damages or
      restrictions upon the operations of any Magna Company; or

                   (l)    except in the ordinary course of business, modify,
      amend, or terminate any Material Contract or waive, release, compromise,
      or assign any Material rights or claims.

             7.3   ADVERSE CHANGES IN CONDITION.  Each Party agrees to give
written notice promptly to the other Party upon becoming aware of the
occurrence or impending occurrence of any event or circumstance relating to it
or any of its Subsidiaries which (i) is reasonably likely to have, individually
or in the aggregate, a Material Adverse Effect on it or (ii) would cause or
constitute a Material breach of any of its representations, warranties, or
covenants contained herein, and to use its reasonable efforts to prevent or
promptly to remedy the same.

             7.4   REPORTS.  Each Party and its Subsidiaries shall file all
reports required to be filed by it with Regulatory Authorities between the date
of this Agreement and the Effective Time and shall deliver to the other Party
copies of all such reports promptly after the same are filed.  If financial
statements are contained in any such reports filed with the SEC, such financial
statements will fairly present the consolidated financial position of the
entity filing such statements as of the dates indicated and the consolidated
results of operations, changes in stockholders' equity, and cash flows for the
periods then ended in accordance with GAAP (subject in the case of interim
financial statements to normal recurring year-end adjustments that are not
Material).  As of their respective dates, such reports filed with the SEC will
comply in all Material respects with the Securities Laws and will not contain
any untrue statement of a Material fact or omit to state a Material fact
required to be stated therein or necessary in order to make the statements
therein, in light of the circumstances under which they were made, not
misleading.  Any financial statements contained in any other reports to another
Regulatory Authority shall be prepared in accordance with Laws applicable to
such reports.


                                   ARTICLE 8
                             ADDITIONAL AGREEMENTS

             8.1   REGISTRATION STATEMENT; JOINT PROXY STATEMENT; STOCKHOLDER
APPROVALS.  As soon as reasonably practicable after execution of this
Agreement, UPC shall file the Registration Statement with the SEC, and shall
use its reasonable efforts to cause the Registration Statement to become
effective under the 1933 Act and take any action required to be taken under the
applicable state Blue Sky or securities Laws in connection with the issuance of
the shares of UPC Common Stock upon consummation of the Merger.  Magna shall
furnish all information concerning it and the holders of its capital stock as
UPC may reasonably request in connection with such action.  Magna shall call a
Stockholders' Meeting, to be held as soon as reasonably practicable after the
Registration Statement is declared effective by the SEC, for the purpose of
voting upon approval of (i) this Agreement and the Plan of Merger and (ii) such
other related matters as it deems appropriate.  UPC shall call a Stockholders'
Meeting, to be held as soon as





                                     - 30 -
<PAGE>   36


reasonably practicable after the Registration Statement is declared effective
by the SEC, for the purpose of voting upon approval of (i) the UPC Charter
Amendment (to the extent such amendment is not previously approved at the 1998
annual meeting of stockholders of UPC), (ii) the issuance of shares of UPC
Common Stock pursuant to the Merger, and (iii) such other related matters as it
deems appropriate.  In connection with the Stockholders' Meetings, (i) UPC and
Magna shall prepare and file with the SEC a Joint Proxy Statement and mail such
Joint Proxy Statement to their respective stockholders, (ii) the Parties shall
furnish to each other all information concerning them that they may reasonably
request in connection with such Joint Proxy Statement, (iii) the Boards of
Directors of UPC and Magna shall recommend to their respective stockholders the
approval of the matters submitted for approval, and (iv) the Boards of
Directors and officers of UPC and Magna shall use their reasonable efforts to
obtain such stockholders' approvals, provided that each of UPC and Magna may
withdraw, modify, or change in an adverse manner to the other Party its
recommendations if the Board of Directors of such Party, after having consulted
with and based upon the advice of outside counsel, determines in good faith
that the failure to so withdraw, modify, or change its recommendation could
constitute a breach of the fiduciary duties of such Party's Board of Directors
under applicable Law.  In addition, nothing in this Section 8.1 or elsewhere in
this Agreement shall prohibit accurate disclosure by either Party of
information that is required to be disclosed in the Registration Statement or
the Joint Proxy Statement or in any other document required to be filed with
the SEC (including, without limitation, a Solicitation/Recommendation Statement
on Schedule 14D-9) or otherwise required to be publicly disclosed by applicable
Law or regulations or rules of the NYSE.

             8.2   EXCHANGE LISTING.  UPC shall use its reasonable efforts to
list, prior to the Effective Time, on the NYSE, subject to official notice of
issuance, the shares of UPC Common Stock to be issued to the holders of Magna
Capital Stock pursuant to the Merger.

             8.3   APPLICATIONS.  UPC shall promptly prepare and file, and
Magna shall cooperate in the preparation and, where appropriate, filing of,
applications with all Regulatory Authorities having jurisdiction over the
transactions contemplated by this Agreement seeking the requisite Consents
necessary to consummate the transactions contemplated by this Agreement.

             8.4   FILINGS WITH STATE OFFICES.  Upon the terms and subject to
the conditions of this Agreement, UPC shall cause UPHC to execute and file the
Certificate of Merger with the Secretary of State of the State of Delaware and
the Articles of Merger with the Secretary of State of the State of Tennessee.

             8.5   AGREEMENT AS TO EFFORTS TO CONSUMMATE.  Subject to the terms
and conditions of this Agreement, each Party agrees to use, and to cause its
Subsidiaries to use, its reasonable efforts to take, or cause to be taken, all
actions, and to do, or cause to be done, all things necessary, proper, or
advisable under applicable Laws to consummate and make effective, as soon as
reasonably practicable after the date of this Agreement, the transactions
contemplated by this Agreement, including, without limitation, using its
reasonable efforts to lift or rescind any Order adversely affecting its ability
to consummate the transactions contemplated herein and to cause to be satisfied
the conditions referred to in Article 9 of this Agreement; provided, that
nothing herein





                                     - 31 -
<PAGE>   37


shall preclude either Party from exercising its rights under this Agreement.
Each Party shall use, and shall cause each of its Subsidiaries to use, its
reasonable efforts to obtain all Consents necessary or desirable for the
consummation of the transactions contemplated by this Agreement.

             8.6   INVESTIGATION AND CONFIDENTIALITY.

                   (a)    Prior to the Effective Time, each Party shall keep
the other Party advised of all Material developments relevant to its business
and to consummation of the Merger and shall permit the other Party to make or
cause to be made such investigation of the business and properties of it and
its Subsidiaries and of their respective financial and legal conditions as the
other Party reasonably requests, provided that such investigation shall be
reasonably related to the transactions contemplated hereby and shall not
interfere unnecessarily with normal operations.  No investigation by a Party
shall affect the representations and warranties of the other Party.

                   (b)    Each Party shall, and shall cause its advisers and
agents to, maintain the confidentiality of all confidential information
furnished to it by the other Party concerning its and its Subsidiaries'
businesses, operations, and financial positions and shall not use such
information for any purpose except in furtherance of the transactions
contemplated by this Agreement.  If this Agreement is terminated prior to the
Effective Time, each Party shall promptly return or certify the destruction of
all documents and copies thereof, and all work papers containing confidential
information received from the other Party.

                   (c)    Each Party agrees to give the other Party notice as
soon as practicable after any determination by it of any fact or occurrence
relating to the other Party which it has discovered through the course of its
investigation and which represents, or is reasonably likely to represent,
either a Material breach of any representation, warranty, covenant, or
agreement of the other Party or which has had or is reasonably likely to have a
Material Adverse Effect on the other Party.

                   (d)    Neither Party nor any of their respective
Subsidiaries shall be required to provide access to or to disclose information
where such access or disclosure would violate or prejudice the rights of its
customers, jeopardize the attorney-client or similar privilege with respect to
such information or contravene any Law, rule, regulation, Order, judgment,
decree, fiduciary duty, or agreement entered into prior to the date of this
Agreement.  The Parties will use their reasonable efforts to make appropriate
substitute disclosure arrangements, to the extent practicable, in circumstances
in which the restrictions of the preceding sentence apply.

             8.7   PRESS RELEASES.  Prior to the Effective Time, UPC and Magna
shall consult with each other as to the form and substance of any press release
or other public disclosure materially related to this Agreement or any other
transaction contemplated hereby; provided, that nothing in this Section 8.7
shall be deemed to prohibit any Party from making any disclosure which its
counsel deems necessary or advisable in order to satisfy such Party's
disclosure obligations imposed by Law.





                                     - 32 -
<PAGE>   38


             8.8   CERTAIN ACTIONS.  Except with respect to this Agreement and
the Plan of Merger and the transactions contemplated hereby and thereby, no
Magna Company nor any Affiliate thereof nor any Representatives thereof
retained by any Magna Company shall directly or indirectly solicit or engage in
negotiations concerning any Acquisition Proposal, or provide any confidential
information or assistance to, or have any discussions with, any Person with
respect to an Acquisition Proposal.  Notwithstanding the foregoing, Magna may,
and may authorize and permit its Representatives to, provide Persons with
confidential information, have discussions or negotiations with, or otherwise
facilitate an effort or attempt by such Person to make or implement an
Acquisition Proposal not solicited in violation of this Agreement if Magna's
Board of Directors, after having consulted with, and based upon the advice of,
outside counsel, determines in good faith that the failure to take such actions
could constitute a breach of the fiduciary duties of Magna's Board of Directors
under applicable Law; provided, that Magna shall promptly advise UPC following
the receipt of any Acquisition Proposal and the Material details thereof; and,
provided further, that prior to delivery of confidential information relating
to Magna or access to Magna's books, records, or properties in connection
therewith, the other Person shall have entered into a confidentiality agreement
substantially similar to the Confidentiality Agreement previously entered into
between Magna and UPC.  Nothing contained in this Section 8.8 shall prohibit
the Board of Directors of Magna from complying with Rule 14e-2, promulgated
under the 1934 Act.  Magna shall (i) immediately cease and cause to be
terminated any existing activities, discussions, or negotiations with any
Persons conducted heretofore with respect to any of the foregoing and (ii)
direct and use its reasonable efforts to cause of all its Representatives not
to engage in any of the foregoing.

             8.9   ACCOUNTING AND TAX TREATMENT.  Each of the Parties
undertakes and agrees to use its reasonable efforts to cause the Merger, and to
take no action which would cause the Merger not, to qualify for treatment as a
pooling of interests for accounting purposes or as a "reorganization" within
the meaning of Section 368(a) of the Internal Revenue Code for federal income
tax purposes.

             8.10  STATE TAKEOVER LAWS.  Each Magna Company shall take all
necessary steps to exempt the transactions contemplated by this Agreement and
the Plan of Merger from, or if necessary challenge the validity or
applicability of, any applicable Takeover Laws.

             8.11  CHARTER PROVISIONS.  Each Magna Company shall take all
necessary action to ensure that the entering into of this Agreement and the
Plan of Merger and the consummation of the Merger and the other transactions
contemplated hereby and thereby do not and will not result in the grant of any
rights to any Person under the Articles of Incorporation, Bylaws, or other
governing instruments of any Magna Company or restrict or impair the ability of
UPC or any of its Subsidiaries to vote, or otherwise to exercise the rights of
a stockholder with respect to, shares of any Magna Company that may be directly
or indirectly acquired or controlled by it.

             8.12  RIGHTS AGREEMENT.  Magna shall take all necessary action
(including, if required, redeeming all of the outstanding Preferred Stock
Purchase Rights or amending or terminating the Magna Rights Agreement) so that
the entering into of this Agreement, the acquisition of shares pursuant to the
Stock Option Agreement, and consummation of the Merger





                                     - 33 -
<PAGE>   39


and the other transactions contemplated hereby do not and will not result in
any Person becoming able to exercise any Preferred Stock Purchase Rights under
the Magna Rights Agreement or enabling or requiring the Preferred Stock
Purchase Rights to be separated from the shares of Magna Common Stock to which
they are attached or to be triggered or to become exercisable.

             8.13  AGREEMENT OF AFFILIATES.  Magna has disclosed in Section
8.13 of the Magna Disclosure Memorandum each Person whom it reasonably believes
may be deemed an "affiliate" of Magna for purposes of Rule 145 under the 1933
Act.  Magna shall use its reasonable efforts to cause each such Person to
deliver to UPC not later than 30 days prior to the Effective Time, a written
agreement, in substantially the form of Exhibit 3, providing that such Person
will not sell, pledge, transfer, or otherwise dispose of the shares of Magna
Common Stock held by such Person except as contemplated by such agreement or by
this Agreement and will not sell, pledge, transfer, or otherwise dispose of the
shares of UPC Common Stock to be received by such Person upon consummation of
the Merger except in compliance with applicable provisions of the 1933 Act and
the rules and regulations thereunder and until such time as financial results
covering at least 30 days of combined operations of UPC and Magna have been
published within the meaning of Section 201.01 of the SEC's Codification of
Financial Reporting Policies.  Shares of UPC Common Stock issued to such
affiliates of Magna in exchange for shares of Magna Common Stock shall not be
transferable until such time as financial results covering at least 30 days of
combined operations of UPC and Magna have been published within the meaning of
Section 201.01 of the SEC's Codification of Financial Reporting Policies,
regardless of whether each such affiliate has provided the written agreement
referred to in this Section 8.13 (and UPC shall be entitled to place
restrictive legends upon certificates for shares of UPC Common Stock issued to
affiliates of Magna pursuant to this Agreement to enforce the provisions of
this Section 8.13).  UPC shall not be required to maintain the effectiveness of
the Registration Statement under the 1933 Act for the purposes of resale of UPC
Common Stock by such affiliates.

             8.14  EMPLOYEE BENEFITS AND CONTRACTS.  Following the Effective
Time, but in no event earlier than the consolidation of Magna's depository
institution Subsidiaries with UPC's depository institution Subsidiaries, UPC
shall provide to officers and employees of the Magna Companies (the "Continuing
Employees"), employee benefits under employee benefit plans on terms and
conditions which when taken as a whole are substantially similar to those
currently provided by the UPC Companies to their similarly situated officers
and employees.  For purposes of participation, vesting, and benefit accruals
(but not accrual of benefits under UPC's tax-qualified retirement plans) under
such employee benefit plans, (i) service under any qualified defined benefit or
contribution plans of Magna shall be treated as service under UPC's qualified
defined benefit or contribution plans and (ii) service under any other employee
benefit plans of Magna shall be treated as service under any similar employee
benefit plans maintained by UPC.  UPC shall cause the UPC welfare benefit plans
that cover the Continuing Employees after the Effective Time to (i) waive any
waiting period and restrictions and limitations for preexisting conditions or
insurability and (ii) cause any deductible, co-insurance, or maximum
out-of-pocket payments made by the Continuing Employees under Magna's welfare
benefit plans to be credited to such Continuing Employees under the UPC welfare
benefit plans, so as to reduce the amount of any deductible, co-insurance, or
maximum out-of-pocket payments payable by the Continuing Employees under the
UPC welfare benefit plans.  Prior to the commencement of the Continuing





                                     - 34 -
<PAGE>   40


Employee's participation in the UPC employee benefit plans and programs, the
benefit coverage of, and participation in benefit plans by, the Continuing
Employees shall continue under the Magna Benefit Plans, as in effect
immediately prior to the Effective Time.  During such transition period, the
coverage under and participation in the Magna Benefit Plans shall be deemed to
provide the Continuing Employees with benefits that are no less favorable than
those offered to other employees of UPC and its Subsidiaries.  Except as
expressly provided in the Supplemental Letter, UPC also shall cause Magna and
its Subsidiaries to honor all employment, severance, consulting, and other
compensation Contracts disclosed in Section 8.14 of the Magna Disclosure
Memorandum to UPC between any Magna Company and any current or former director,
officer, independent contractor, or employee thereof, and all provisions of the
Magna Benefit Plans.

             8.15  INDEMNIFICATION.

                   (a)    After the Effective Time, UPC shall indemnify, defend
and hold harmless the present and former directors, officers, employees, and
agents of Magna or any of Magna's Subsidiaries (each, a "Indemnified Party")
(including any person who becomes a director, officer, employee, or agent prior
to the Effective Time) against all Liabilities (including reasonable attorneys'
fees, and expenses, judgments, fines and amounts paid in settlement) arising
out of actions or omissions occurring at or prior to the Effective Time
(including the transactions contemplated by this Agreement and the Stock Option
Agreement) to the full extent permitted under Delaware Law and by Magna's
Certificate of Incorporation and Bylaws, as in effect on the date hereof and
any indemnity agreements entered into prior to the date of this Agreement by
any of the Magna Companies and any director, officer, employee, or agent of any
of the Magna Companies, including, without limitation, provisions relating to
advances of expenses incurred in the defense of any Litigation.  Without
limiting the foregoing, in any case in which approval by UPC is required to
effectuate any indemnification, UPC shall direct, at the election of the
Indemnified Party, that the determination of any such approval shall be made by
independent counsel mutually agreed upon between UPC and the Indemnified Party.

                   (b)    UPC and the Surviving Corporation shall use their
reasonable efforts (and Magna shall cooperate prior to the Effective Time in
these efforts) to maintain in effect for a period of three years after the
Effective Time, Magna's existing directors' and officers' liability insurance
policy (provided that UPC and the Surviving Corporation may substitute therefor
(i) policies of at least the same coverage and amounts containing terms and
conditions which are substantially no less advantageous or (ii) with the
consent of Magna given prior to the Effective Time, any other policy) with
respect to claims arising from facts or events which occurred prior to the
Effective Time and covering persons who are currently covered by such
insurance; provided, that the Surviving Corporation shall not be obligated to
make aggregate annual premium payments for such three-year period in respect of
such policy (or coverage replacing such policy) which exceed, for the portion
related to Magna's directors and officers, 150% of the annual premium payments
on Magna's current policy in effect as of the date of this Agreement (the
"Maximum Amount").  If the amount of the premiums necessary to maintain or
procure such insurance coverage exceeds the Maximum Amount, UPC shall use its
reasonable efforts to maintain the most advantageous policies of directors' and
officers' liability insurance obtainable for a premium equal to the Maximum
Amount.





                                     - 35 -
<PAGE>   41


                   (c)    Any Indemnified Party wishing to claim
indemnification under paragraph (a) of this Section 8.15, upon learning of any
such Liability or Litigation, shall promptly notify UPC thereof, provided that
the failure so to notify shall not affect the obligations of UPC under this
Section 8.15 unless and to the extent such failure materially increases UPC's
Liability under this Section 8.15.  In the event of any such Litigation
(whether arising before or after the Effective Time), (i) UPC or the Surviving
Corporation shall have the right to assume the defense thereof and UPC shall
not be liable to such Indemnified Parties for any legal expenses of other
counsel or any other expenses subsequently incurred by such Indemnified Parties
in connection with the defense thereof, except that if UPC or the Surviving
Corporation elects not to assume such defense or counsel for the Indemnified
Parties advises that there are substantive issues which raise conflicts of
interest between UPC or the Surviving Corporation and the Indemnified Parties,
the Indemnified Parties may retain counsel satisfactory to them, and UPC or the
Surviving Corporation shall pay all reasonable fees and expenses of such
counsel for the Indemnified Parties promptly as statements therefor are
received; provided, that UPC shall be obligated pursuant to this paragraph (c)
to pay for only one firm of counsel for all Indemnified Parties in any
jurisdiction, (ii) the Indemnified Parties will cooperate in the defense of any
such Litigation, and (iii) UPC shall not be liable for any settlement effected
without its prior written consent; and provided further that the Surviving
Corporation shall not have any obligation hereunder to any Indemnified Party
when and if a court of competent jurisdiction shall determine, and such
determination shall have become final, that the indemnification of such
Indemnified Party in the manner contemplated hereby is prohibited by applicable
Law.

                   (d)    The Surviving Corporation shall not be liable for any
settlement effected without its prior written consent which shall not be
unreasonably withheld.

                   (e)    If either UPC or the Surviving Corporation or any of
their respective successors or assigns shall consolidate with or merge into any
other Person and shall not be the continuing or surviving Person of such
consolidation or merger or shall transfer all or substantially all of its
Assets to any Person, then and in each case, proper provision shall be made so
that the successors and assigns of either UPC or the Surviving Corporation
shall assume the obligations set forth in this Section 8.15.

                   (f)    UPC shall pay all reasonable costs, including
attorneys' fees, that may be incurred by any Indemnified Party in enforcing the
indemnity and other obligations provided for in this Section 8.15.

                   (g)    The provisions of this Section 8.15 are intended to
be for the benefit of, and shall be enforceable by, each Indemnified Party and
his or her heirs or representatives.

             8.16  CERTAIN MODIFICATIONS.  UPC and Magna shall consult with
respect to their loan, litigation, and real estate valuation policies and
practices (including loan classifications and levels of reserves) and Magna
shall make such modifications or changes to its policies and practices, if any,
prior to the Effective Time, as may be mutually agreed upon.  UPC and Magna
also shall consult with respect to the character, amount, and timing of
restructuring and Merger-





                                     - 36 -
<PAGE>   42


related expense charges to be taken by each of the Parties in connection with
the transactions contemplated by this Agreement and shall take such charges in
accordance with GAAP as may be mutually agreed upon by the Parties.  Neither
Party's representations, warranties, and covenants contained in this Agreement
shall be deemed to be inaccurate or breached in any respect as a consequence of
any modifications or charges undertaken solely on account of this Section 8.16.

             8.17  PENDING MAGNA ACQUISITION.  Each of UPC and Magna shall use
its reasonable efforts to modify or amend (or cause to be modified or amended)
this Agreement or the Charter Agreement as necessary or appropriate to ensure
that each of the acquisition of Magna by UPC and the acquisition of Charter by
Magna shall qualify as a reorganization within the meaning of Section 368(a) of
the Internal Revenue Code.  Any such amendments or modifications shall be made
as soon as reasonably practicable after the date of this Agreement.


                                   ARTICLE 9
               CONDITIONS PRECEDENT TO OBLIGATIONS TO CONSUMMATE

             9.1   CONDITIONS TO OBLIGATIONS OF EACH PARTY.  The respective
obligations of each Party to perform this Agreement and the Plan of Merger and
to consummate the Merger and the other transactions contemplated hereby are
subject to the satisfaction of the following conditions, unless waived by both
Parties pursuant to Section 11.6 of this Agreement:

                   (a)    STOCKHOLDER APPROVALS.  The stockholders of Magna
      shall have approved this Agreement and the Plan of Merger and the
      consummation of the transactions contemplated hereby and thereby,
      including the Merger, as and to the extent required by Law, by the
      provisions of any governing instruments, and by the rules of the NYSE.
      The stockholders of UPC shall have approved the UPC Charter Amendment and
      the issuance of shares of UPC Common Stock pursuant to the Merger, as and
      to the extent required by Law, by the provisions of any governing
      instruments, and by the rules of the NYSE.

                   (b)    REGULATORY APPROVALS.  All Consents of, filings and
      registrations with, and notifications to, all Regulatory Authorities
      required for consummation of the Merger shall have been obtained or made
      and shall be in full force and effect and all waiting periods required by
      Law shall have expired.  No Consent obtained from any Regulatory
      Authority which is necessary to consummate the transactions contemplated
      hereby shall be conditioned or restricted in a manner (excluding
      requirements relating to the raising of additional capital or the
      disposition of Assets or deposits) which in the reasonable good faith
      judgment of the Board of Directors of UPC would so materially adversely
      impact the economic or business benefits of the transactions contemplated
      by this Agreement so as to render inadvisable the consummation of the
      Merger.

                   (c)    CONSENTS AND APPROVALS.  Each Party shall have
      obtained any and all Consents required for consummation of the Merger
      (other than those referred to in Section 9.1(b) of this Agreement) or for
      the preventing of any Default under any Contract or Permit





                                     - 37 -
<PAGE>   43


      of such Party which, if not obtained or made, is reasonably likely to
      have, individually or in the aggregate, a Material Adverse Effect on such
      Party.

                   (d)    LEGAL PROCEEDINGS.  No court or governmental or
      Regulatory Authority of competent jurisdiction shall have enacted,
      issued, promulgated, enforced, or entered any Law or Order (whether
      temporary, preliminary, or permanent) or taken any other action which
      prohibits, restricts, or makes illegal consummation of the transactions
      contemplated by this Agreement.

                   (e)    REGISTRATION STATEMENT.  The Registration Statement
      shall be effective under the 1933 Act, no stop orders suspending the
      effectiveness of the Registration Statement shall have been issued, no
      action, suit, proceeding, or investigation by the SEC to suspend the
      effectiveness thereof shall have been initiated and be continuing, and
      all necessary approvals under state securities Laws or the 1933 Act or
      1934 Act relating to the issuance or trading of the shares of UPC Common
      Stock issuable pursuant to the Merger shall have been received.

                   (f)    EXCHANGE LISTING.  The shares of UPC Common Stock
      issuable pursuant to the Merger shall have been approved for listing on
      the NYSE, subject to official notice of issuance.

                   (g)    TAX MATTERS.  Magna shall have received a written
      opinion from Wachtell, Lipton, Rosen & Katz and UPC shall have received a
      written opinion from Alston & Bird LLP, in each case in a form reasonably
      satisfactory to such Party (the "Tax Opinions"), dated the date of the
      Effective Time, substantially to the effect that (i) the Merger will
      constitute a reorganization within the meaning of Section 368(a) of the
      Internal Revenue Code, (ii) no gain or loss will be recognized by holders
      of Magna Common Stock who exchange all of their Magna Common Stock solely
      for UPC Common Stock pursuant to the Merger (except with respect to any
      cash received in lieu of a fractional share interest in UPC Common
      Stock), (iii) the tax basis of the UPC Common Stock received by holders
      of Magna Common Stock who exchange all of their Magna Common Stock solely
      for UPC Common Stock in the Merger will be the same as the tax basis of
      the Magna Common Stock surrendered in exchange for the UPC Common Stock
      (reduced by an amount allocable to a fractional share interest in UPC
      Common Stock for which cash is received), and (iv) the holding period of
      the UPC Common Stock received by holders who exchange all of their Magna
      Common Stock solely for UPC Common Stock in the Merger will be the same
      as the holding period of the Magna Common Stock surrendered in exchange
      therefor, provided that such Magna Common Stock is held as a capital
      asset at the Effective Time.  In rendering such Tax Opinions, such
      counsel shall be entitled to rely upon representations of officers of
      Magna and UPC reasonably satisfactory in form and substance to such
      counsel.

                   (h)    POOLING LETTERS.  Each Party shall have received a
      letter, dated as of the Effective Time, in a form reasonably acceptable
      to such Party, from Price Waterhouse LLP to the effect that the Merger
      will qualify for pooling-of-interests accounting treatment.  Each Party
      shall have received a letter, dated as of the Effective Time, in a form
      reasonably





                                     - 38 -
<PAGE>   44


      acceptable to such Party, from Ernst & Young LLP to the effect that such
      firm is not aware of any matters relating to Magna and its Subsidiaries
      which would preclude the Merger from qualifying for pooling-of-interests
      accounting treatment.

             9.2   CONDITIONS TO OBLIGATIONS OF UPC.  The obligations of UPC to
perform this Agreement and consummate the Merger and the other transactions
contemplated hereby are subject to the satisfaction of the following
conditions, unless waived by UPC pursuant to Section 11.6(a) of this Agreement:

                   (a)    REPRESENTATIONS AND WARRANTIES.  For purposes of this
      Section 9.2(a), the accuracy of the representations and warranties of
      Magna set forth in this Agreement shall be assessed as of the date of
      this Agreement and as of the Effective Time with the same effect as
      though all such representations and warranties had been made on and as of
      the Effective Time (provided that representations and warranties which
      are confined to a specified date shall speak only as of such date).  The
      representations and warranties of Magna set forth in Section 5.3 of this
      Agreement shall be true and correct (except for inaccuracies which are de
      minimis in amount).  The representations and warranties of Magna set
      forth in Sections 5.18, 5.19, 5.20, and 5.21 of this Agreement shall be
      true and correct in all Material respects.  There shall not exist
      inaccuracies in the representations and warranties of Magna set forth in
      this Agreement (including the representations and warranties set forth in
      Sections 5.3, 5.18, 5.19, 5.20, and 5.21) such that the aggregate effect
      of such inaccuracies has, or is reasonably likely to have, a Material
      Adverse Effect on Magna; provided that, for purposes of this sentence
      only, those representations and warranties which are qualified by
      references to "material, "Material," "Material Adverse Effect," or
      variations thereof, or to the "Knowledge" of Magna or to a matter being
      "known" by Magna shall be deemed not to include such qualifications.

                   (b)    PERFORMANCE OF AGREEMENTS AND COVENANTS.  Each and
      all of the agreements and covenants of Magna to be performed and complied
      with pursuant to this Agreement and the other agreements contemplated
      hereby prior to the Effective Time shall have been duly performed and
      complied with in all Material respects.

                   (c)    CERTIFICATES.  Magna shall have delivered to UPC (i)
      a certificate, dated as of the Effective Time and signed on its behalf by
      its duly authorized officers, to the effect that the conditions of its
      obligations set forth in Section 9.2(a) and 9.2(b) of this Agreement have
      been satisfied and (ii) certified copies of resolutions duly adopted by
      Magna's Board of Directors and stockholders evidencing the taking of all
      corporate action necessary to authorize the execution, delivery, and
      performance of this Agreement and the Plan of Merger, and the
      consummation of the transactions contemplated hereby and thereby, all in
      such reasonable detail as UPC and its counsel shall request.

                   (d)    AFFILIATE AGREEMENTS.  UPC shall have received from
      each affiliate of Magna the affiliates agreement referred to in Section
      8.12 of this Agreement, to the extent necessary to assure in the
      reasonable judgment of UPC that the transactions contemplated hereby will
      qualify for pooling-of-interests accounting treatment.





                                     - 39 -
<PAGE>   45



                   (e)    RIGHTS AGREEMENT.  None of the events described in
      Sections 3, 7, or 11 of the Magna Rights Agreement shall have occurred,
      and the Preferred Stock Purchase Rights shall not have become
      non-redeemable or exercisable for capital stock of UPC upon consummation
      of the Merger.

             9.3   CONDITIONS TO OBLIGATIONS OF MAGNA.  The obligations of
Magna to perform this Agreement and the Plan of Merger and consummate the
Merger and the other transactions contemplated hereby are subject to the
satisfaction of the following conditions, unless waived by Magna pursuant to
Section 11.6(b) of this Agreement:

                   (a)    REPRESENTATIONS AND WARRANTIES.  For purposes of this
      Section 9.3(a), the accuracy of the representations and warranties of UPC
      set forth in this Agreement shall be assessed as of the date of this
      Agreement and as of the Effective Time with the same effect as though all
      such representations and warranties had been made on and as of the
      Effective Time (provided that representations and warranties which are
      confined to a specified date shall speak only as of such date).  The
      representations and warranties of UPC set forth in Section 6.3 of this
      Agreement shall be true and correct (except for inaccuracies which are de
      minimis in amount).  The representations and warranties of UPC set forth
      in Section 6.16 of this Agreement shall be true and correct in all
      Material respects.  There shall not exist inaccuracies in the
      representations and warranties of UPC set forth in this Agreement
      (including the representations and warranties set forth in Sections 6.3
      and 6.16) such that the aggregate effect of such inaccuracies has, or is
      reasonably likely to have, a Material Adverse Effect on UPC; provided
      that, for purposes of this sentence only, those representations and
      warranties which are qualified by references to "material," "Material,"
      "Material Adverse Effect," or variations thereof, or to the "Knowledge"
      of UPC or to a matter being "known" by UPC shall be deemed not to include
      such qualifications.

                   (b)    PERFORMANCE OF AGREEMENTS AND COVENANTS.  Each and
      all of the agreements and covenants of UPC to be performed and complied
      with pursuant to this Agreement and the other agreements contemplated
      hereby prior to the Effective Time shall have been duly performed and
      complied with in all Material respects.

                   (c)    CERTIFICATES.  UPC shall have delivered to Magna (i)
      a certificate, dated as of the Effective Time and signed on its behalf by
      its duly authorized officers, to the effect that the conditions of its
      obligations set forth in Section 9.3(a) and 9.3(b) of this Agreement have
      been satisfied and (ii) certified copies of resolutions duly adopted by
      UPC's Board of Directors and stockholders evidencing the taking of all
      corporate action necessary to authorize the execution, delivery, and
      performance of this Agreement, and the consummation of the transactions
      contemplated hereby, all in such reasonable detail as Magna and its
      counsel shall request.





                                     - 40 -
<PAGE>   46


                                   ARTICLE 10
                                  TERMINATION

             10.1  TERMINATION.  Notwithstanding any other provision of this
Agreement and the Plan of Merger, and notwithstanding the approval of this
Agreement by the stockholders of Magna or UPC, this Agreement may be terminated
and the Merger abandoned at any time prior to the Effective Time:

                   (a)    By mutual consent of the Board of Directors of UPC
      and the Board of Directors of Magna; or

                   (b)    By the Board of Directors of either Party (provided
      that the terminating Party is not then in breach of any representation or
      warranty contained in this Agreement under the applicable standard set
      forth in Section 9.2(a) of this Agreement in the case of Magna and
      Section 9.3(a) of this Agreement in the case of UPC or in Material breach
      of any covenant or other agreement contained in this Agreement) in the
      event of an inaccuracy of any representation or warranty of the other
      Party contained in this Agreement which cannot be or has not been cured
      within 30 days after the giving of written notice to the breaching Party
      of such inaccuracy and which inaccuracy would provide the terminating
      Party the ability to refuse to consummate the Merger under the applicable
      standard set forth in Section 9.2(a) of this Agreement in the case of
      Magna and Section 9.3(a) of this Agreement in the case of UPC; or

                   (c)    By the Board of Directors of either Party (provided
      that the terminating Party is not then in breach of any representation or
      warranty contained in this Agreement under the applicable standard set
      forth in Section 9.2(a) of this Agreement in the case of Magna and
      Section 9.3(a) in the case of UPC) in the event of a Material breach by
      the other Party of any covenant or agreement contained in this Agreement
      which cannot be or has not been cured within 30 days after the giving of
      written notice to the breaching Party of such breach; or

                   (d)    By the Board of Directors of either Party in the
      event (i) any Consent of any Regulatory Authority required for
      consummation of the Merger and the other transactions contemplated hereby
      shall have been denied by final nonappealable action of such authority or
      if any action taken by such authority is not appealed within the time
      limit for appeal or (ii) the stockholders of UPC or Magna fail to vote
      their approval of the matters submitted for the approval by such
      stockholders at the Stockholders' Meetings where the transactions were
      presented to such stockholders for approval and voted upon; or

                   (e)    By the Board of Directors of either Party in the
      event that the Merger shall not have been consummated by December 31,
      1998, if the failure to consummate the transactions contemplated hereby
      on or before such date is not caused by any breach of this Agreement by
      the Party electing to terminate pursuant to this Section 10.1(e); or





                                     - 41 -
<PAGE>   47


                   (f)    By the Board of Directors of either Party (provided
      that the terminating Party is not then in breach of any representation or
      warranty contained in this Agreement under the applicable standard set
      forth in Section 9.2(a) of this Agreement in the case of Magna and
      Section 9.3(a) of this Agreement in the case of UPC or in Material breach
      of any covenant or other agreement contained in this Agreement) in the
      event that any of the conditions precedent to the obligations of such
      Party to consummate the Merger cannot be satisfied or fulfilled by the
      date specified in Section 10.1(e) of this Agreement.

             10.2  EFFECT OF TERMINATION.  In the event of the termination and
abandonment of this Agreement pursuant to Section 10.1 of this Agreement, this
Agreement, the Plan of Merger, and the Supplemental Letter shall become void
and have no effect, except that (i) the provisions of this Section 10.2 and
Article 11 and Section 8.6(b) of this Agreement shall survive any such
termination and abandonment and (ii) a termination pursuant to Sections
10.1(b), 10.1(c), or 10.1(f) of this Agreement shall not relieve the breaching
Party from Liability for an uncured willful breach of a representation,
warranty, covenant, or agreement giving rise to such termination.  The Stock
Option Agreement shall be governed by its own terms.

             10.3  NON-SURVIVAL OF REPRESENTATIONS AND COVENANTS.  The
respective representations, warranties, obligations, covenants, and agreements
of the Parties shall not survive the Effective Time except this Section 10.3
and Articles 2, 3, 4, and 11 and Sections 8.13 and 8.15 of this Agreement and
the Supplemental Letter.


                                   ARTICLE 11
                                 MISCELLANEOUS

             11.1  DEFINITIONS.

                   (a)    Except as otherwise provided herein, the capitalized
terms set forth below shall have the following meanings:

                   "ACQUISITION PROPOSAL" with respect to a Party shall mean
      any tender offer or exchange offer or any proposal for a merger,
      acquisition of all of the stock or Assets of, or other business
      combination involving such Party or any of its Subsidiaries or the
      acquisition of a substantial equity interest in, or a substantial portion
      of the Assets of, such Party or any of its Subsidiaries.

                   "AFFILIATE" of a Person shall mean any other Person
      directly, or indirectly through one or more intermediaries, controlling,
      controlled by or under common control with such Person.

                   "AGREEMENT" shall mean this Agreement and Plan of
      Reorganization, including the Exhibits hereto (except the Stock Option
      Agreement) delivered pursuant hereto and incorporated herein by
      reference.





                                     - 42 -
<PAGE>   48


                   "ARTICLES OF MERGER" shall mean the Articles of Merger to be
      executed by UPHC and filed with the Secretary of State of the State of
      Tennessee relating to the Merger as contemplated by Section 1.1 of this
      Agreement.

                   "ASSETS" of a Person shall mean all of the assets,
      properties, businesses, and rights of such Person of every kind, nature,
      character, and description, whether real, personal, or mixed, tangible or
      intangible, accrued or contingent, or otherwise relating to or utilized
      in such Person's business, directly or indirectly, in whole or in part,
      whether or not carried on the books and records of such Person, and
      whether or not owned in the name of such Person or any Affiliate of such
      Person and wherever located.

                   "BHC ACT" shall mean the federal Bank Holding Company Act of
      1956, as amended.

                   "CERTIFICATE OF MERGER" shall mean the certificate of merger
      to be executed by UPHC and filed with the Secretary of State of the State
      of Delaware, relating to the Merger as contemplated by Section 1.1 of
      this Agreement.

                   "CONFIDENTIALITY AGREEMENTS" shall mean those certain
      Confidentiality Agreements, entered into prior to the date of this
      Agreement, between Magna and UPC.

                   "CONSENT" shall mean any consent, approval, authorization,
      clearance, exemption, waiver, or similar affirmation by any Person
      pursuant to any Contract, Law, Order, or Permit.

                   "CONTRACT" shall mean any written or oral agreement,
      arrangement, authorization, commitment, contract, indenture, instrument,
      lease, obligation, plan, practice, restriction, understanding, or
      undertaking of any kind or character, or other document to which any
      Person is a party or that is binding on any Person or its capital stock,
      Assets, or business.

                   "DEFAULT" shall mean (i) any breach or violation of or
      default under any Contract, Order, or Permit, (ii) any occurrence of any
      event that with the passage of time or the giving of notice or both would
      constitute a breach or violation of or default under any Contract, Order,
      or Permit, or (iii) any occurrence of any event that with or without the
      passage of time or the giving of notice would give rise to a right to
      terminate or revoke, change the current terms of, or renegotiate, or to
      accelerate, increase, or impose any Liability under, any Contract, Order,
      or Permit, where, in any such event, such Default is reasonably likely to
      have, individually or in the aggregate, a Material Adverse Effect on a
      Party.

                   "DGCL" shall mean the Delaware General Corporation Law.

                   "ENVIRONMENTAL LAWS" shall mean all Laws relating to
      pollution or protection of human health or the environment (including
      ambient air, surface water, ground water,





                                     - 43 -
<PAGE>   49


      land surface, or subsurface strata) and which are administered,
      interpreted, or enforced by the United States Environmental Protection
      Agency and state and local agencies with jurisdiction over, and including
      common law in respect of, pollution or protection of the environment,
      including the Comprehensive Environmental Response Compensation and
      Liability Act, as amended, 42 U.S.C. 9601 et seq. ("CERCLA"), the
      Resource Conservation and Recovery Act, as amended, 42 U.S.C. 6901 et
      seq. ("RCRA"), and other Laws relating to emissions, discharges,
      releases, or threatened releases of any Hazardous Material, or otherwise
      relating to the manufacture, processing, distribution, use, treatment,
      storage, disposal, transport, or handling of any Hazardous Material.

                   "ERISA" shall mean the Employee Retirement Income Security 
      Act of 1974, as amended.

                   "EXHIBITS" 1 through 3, inclusive, shall mean the Exhibits
      so marked, copies of which are attached to this Agreement.  Such Exhibits
      are hereby incorporated by reference herein and made a part hereof, and
      may be referred to in this Agreement and any other related instrument or
      document without being attached hereto.

                   "GAAP" shall mean generally accepted accounting principles,
      consistently applied during the periods involved.

                   "HAZARDOUS MATERIAL" shall mean (i) any hazardous substance,
      hazardous material, hazardous waste, regulated substance, or toxic
      substance (as those terms are defined by any applicable Environmental
      Laws) and (ii) any chemicals, pollutants, contaminants, petroleum,
      petroleum products, or oil (and specifically shall include asbestos
      requiring abatement, removal, or encapsulation pursuant to the
      requirements of governmental authorities and any polychlorinated
      biphenyls).

                   "HSR ACT" shall mean Section 7A of the Clayton Act, as added
      by Title II of the Hart-Scott-Rodino Antitrust Improvements Act of 1976,
      as amended, and the rules and regulations promulgated thereunder.

                   "INTERNAL REVENUE CODE" shall mean the Internal Revenue Code
      of 1986, as amended.

                   "JOINT PROXY STATEMENT" shall mean the joint proxy statement
      used by UPC and Magna to solicit the approval of their respective
      stockholders of the transactions contemplated by this Agreement, which
      shall include the prospectus of UPC relating to the issuance of the UPC
      Common Stock to holders of Magna Common Stock.

                   "KNOWLEDGE" as used with respect to a Person (including
      references to such Person being aware of a particular matter) shall mean
      the personal knowledge of the chairman, president, chief financial
      officer, chief accounting officer, chief credit officer, general counsel,
      or any executive vice president of such Person.





                                     - 44 -
<PAGE>   50


                   "LAW" shall mean any code, law, ordinance, regulation,
      reporting or licensing requirement, rule, or statute applicable to a
      Person or its Assets, Liabilities, or business, including those
      promulgated, interpreted, or enforced by any Regulatory Authority.

                   "LIABILITY" shall mean any direct or indirect, primary or
      secondary, liability, indebtedness, obligation, penalty, cost, or expense
      (including costs of investigation, collection, and defense), claim,
      deficiency, guaranty, or endorsement of or by any Person (other than
      endorsements of notes, bills, checks, and drafts presented for collection
      or deposit in the ordinary course of business) of any type, whether
      accrued, absolute or contingent, liquidated or unliquidated, matured or
      unmatured, or otherwise.

                   "LIEN" shall mean any conditional sale agreement, default of
      title, easement, encroachment, encumbrance, hypothecation, infringement,
      lien, mortgage, pledge, reservation, restriction, security interest,
      title retention, or other security arrangement, or any adverse right or
      interest, charge, or claim of any nature whatsoever of, on, or with
      respect to any property or property interest, other than (i) Liens for
      property Taxes not yet due and payable and (ii) for depository
      institution Subsidiaries of a Party, pledges to secure deposits, and
      other Liens incurred in the ordinary course of the banking business.

                   "LITIGATION" shall mean any action, arbitration, cause of
      action, claim, complaint, criminal prosecution, demand letter,
      governmental or other examination or investigation, hearing, inquiry,
      administrative or other proceeding, or notice (written or oral) by any
      Person alleging potential Liability or requesting information relating to
      or affecting a Party, its business, its Assets (including Contracts
      related to it), or the transactions contemplated by this Agreement, but
      shall not include regular, periodic examinations of depository
      institutions and their Affiliates by Regulatory Authorities.

                   "LOAN PROPERTY" shall mean any property owned, leased, or
      operated by the Party in question or by any of its Subsidiaries or in
      which such Party or Subsidiary holds a security or other interest
      (including an interest in a fiduciary capacity), and, where required by
      the context, includes the owner or operator of such property, but only
      with respect to such property.

                   "MAGNA CAPITAL STOCK" shall mean, collectively, Magna Common
      Stock, Magna Class B Preferred Stock, and Magna Class C Preferred Stock.

                   "MAGNA CLASS B PREFERRED STOCK" shall mean the $20.00 par
      value Class B Voting Preferred Stock of Magna.

                   "MAGNA CLASS C PREFERRED STOCK" shall mean the $.10 par
      value Class C Non-Voting Preferred Stock of Magna.

                   "MAGNA COMMON STOCK" shall mean the $2.00 par value common 
      stock of Magna.





                                     - 45 -
<PAGE>   51


                   "MAGNA COMPANIES" shall mean, collectively, Magna and all
      Magna Subsidiaries.

                   "MAGNA DISCLOSURE MEMORANDUM" shall mean the written
      information entitled "Magna Disclosure Memorandum" delivered prior to the
      execution of this Agreement to UPC describing in reasonable detail the
      matters contained therein and, with respect to each disclosure made
      therein, specifically referencing each Section or subsection of this
      Agreement under which such disclosure is being made.

                   "MAGNA FINANCIAL STATEMENTS" shall mean (i) the consolidated
      statements of condition (including related notes and schedules, if any)
      of Magna as of September 30, 1997, and as of December 31, 1996 and 1995,
      and the related statements of income, changes in stockholders' equity,
      and cash flows (including related notes and schedules, if any) for the
      nine months ended September 30, 1997, and for each of the three years
      ended December 31, 1996, 1995, and 1994, as filed by Magna in SEC
      Documents and (ii) the consolidated statements of condition of Magna
      (including related notes and schedules, if any) and related statements of
      income, changes in stockholders' equity, and cash flows (including
      related notes and schedules, if any) included in SEC Documents filed with
      respect to periods ended subsequent to September 30, 1997.

                   "MAGNA RIGHTS AGREEMENT" shall mean that certain Rights
      Agreement, dated November 11, 1988, between Magna and Magna Trust
      Company, as Rights Agent.

                   "MAGNA STOCK PLANS" shall mean the existing stock option and
      other stock-based compensation plans of Magna.

                   "MAGNA SUBSIDIARIES" shall mean the Subsidiaries of Magna,
      which shall include the Magna Subsidiaries described in Section 5.4 of
      this Agreement and any corporation, bank, savings association, or other
      organization acquired as a Subsidiary of Magna in the future and owned by
      Magna at the Effective Time.

                   "MATERIAL" for purposes of this Agreement shall be
      determined in light of the facts and circumstances of the matter in
      question; provided that any specific monetary amount stated in this
      Agreement shall determine materiality in that instance.

                   "MATERIAL ADVERSE EFFECT" on a Party shall mean an event,
      change, or occurrence which, individually or together with any other
      event, change, or occurrence, has a Material adverse impact on (i) the
      financial condition, results of operations, or business of such Party and
      its Subsidiaries, taken as a whole or (ii) the ability of such Party to
      perform its obligations under this Agreement or to consummate the Merger
      or the other transactions contemplated by this Agreement, provided that
      "Material Adverse Effect" shall not be deemed to include the impact of
      (a) changes in banking and similar Laws of general applicability or
      interpretations thereof by courts or governmental authorities, (b)
      changes in GAAP or regulatory accounting principles generally applicable
      to banks and their holding companies, (c) actions and omissions of a
      Party (or any of its Subsidiaries) taken with the





                                     - 46 -
<PAGE>   52


      prior informed consent of the other Party in contemplation of the
      transactions contemplated hereby, and (d) the Merger and compliance with
      the provisions of this Agreement (including the expense associated with
      the vesting of benefits under the various employee benefit plans of Magna
      as a result of the Merger constituting a change of control) on the
      operating performance of the Parties.

                   "NYSE" shall mean the New York Stock Exchange, Inc.

                   "1933 ACT" shall mean the Securities Act of 1933, as
      amended.

                   "1934 ACT" shall mean the Securities Exchange Act of 1934,
      as amended.

                   "ORDER" shall mean any administrative decision or award,
      decree, injunction, judgment, order, quasi-judicial decision or award,
      ruling, or writ of any federal, state, local, or foreign or other court,
      arbitrator, mediator, tribunal, administrative agency, or Regulatory
      Authority.

                   "PARTICIPATION FACILITY" shall mean any facility or property
      in which the Party in question or any of its Subsidiaries participates in
      the management (including, but not limited to, participating in a
      fiduciary capacity) and, where required by the context, said term means
      the owner or operator of such facility or property, but only with respect
      to such facility or property.

                   "PARTY" shall mean either Magna or UPC, and "PARTIES" shall
      mean both Magna and UPC.

                   "PERMIT" shall mean any federal, state, local, and foreign
      governmental approval, authorization, certificate, easement, filing,
      franchise, license, notice, permit, or right to which any Person is a
      party or that is or may be binding upon or inure to the benefit of any
      Person or its securities, Assets, or business.

                   "PERSON" shall mean a natural person or any legal,
      commercial, or governmental entity, such as, but not limited to, a
      corporation, general partnership, joint venture, limited partnership,
      limited liability company, trust, business association, group acting in
      concert, or any person acting in a representative capacity.

                   "PLAN OF MERGER" shall mean the plan of merger providing for
      the Merger, in substantially the form of Exhibit 2.

                   "PREFERRED STOCK CASH PAYMENT AMOUNT" shall mean an amount
      in cash equal to $20.00, plus any accrued but unpaid dividends at the
      Effective Time.

                   "PREFERRED STOCK PURCHASE RIGHTS" shall mean the preferred
      stock purchase rights issued pursuant to the Magna Rights Agreement.





                                     - 47 -
<PAGE>   53


                   "REGISTRATION STATEMENT" shall mean the Registration
      Statement on Form S-4, or other appropriate form, including any
      pre-effective or post-effective amendments or supplements thereto, filed
      with the SEC by UPC under the 1933 Act with respect to the shares of UPC
      Common Stock to be issued to the stockholders of Magna in connection with
      the transactions contemplated by this Agreement.

                   "REGULATORY AUTHORITIES" shall mean, collectively, the
      Federal Trade Commission, the United States Department of Justice, the
      Board of the Governors of the Federal Reserve System, the Office of the
      Comptroller of the Currency, the Federal Deposit Insurance Corporation,
      the Office of Thrift Supervision, all state regulatory agencies having
      jurisdiction over the Parties and their respective Subsidiaries, the
      NASD, and the SEC.

                   "REPRESENTATIVE" shall mean any investment banker, financial
      advisor, attorney, accountant, consultant, or other representative of a
      Person.

                   "RIGHTS" shall mean all arrangements, calls, commitments,
      Contracts, options, rights to subscribe to, scrip, understandings,
      warrants, or other binding obligations of any character whatsoever
      relating to, or securities or rights convertible into or exchangeable
      for, shares of the capital stock of a Person or by which a Person is or
      may be bound to issue additional shares of its capital stock or other
      Rights.

                   "SEC" shall mean the United States Securities and Exchange
      Commission.

                   "SEC DOCUMENTS" shall mean all forms, proxy statements,
      registration statements, reports, schedules, and other documents filed,
      or required to be filed, by a Party or any of its Subsidiaries with any
      Regulatory Authority pursuant to the Securities Laws.

                   "SECURITIES LAWS" shall mean the 1933 Act, the 1934 Act, the
      Investment Company Act of 1940, as amended, the Investment Advisors Act
      of 1940, as amended, the Trust Indenture Act of 1939, as amended, and the
      rules and regulations of any Regulatory Authority promulgated thereunder.

                   "STOCK OPTION AGREEMENT" shall mean the stock option
      agreement by and between Magna and UPC, in substantially the form of
      Exhibit 1.

                   "STOCKHOLDERS' MEETINGS" shall mean the respective meetings
      of the stockholders of UPC and Magna to be held pursuant to Section 8.1
      of this Agreement, including any adjournment or adjournments thereof.

                   "SUBSIDIARIES" shall mean all those corporations, banks,
      associations, or other entities of which the entity in question owns or
      controls 50% or more of the outstanding equity securities either directly
      or through an unbroken chain of entities as to each of which 50% or more
      of the outstanding equity securities is owned directly or indirectly by
      its parent; provided, there shall not be included any such entity
      acquired through foreclosure or any such entity the equity securities of
      which are owned or controlled in a fiduciary capacity.





                                     - 48 -
<PAGE>   54


                   "SUPPLEMENTAL LETTER" shall mean the supplemental letter of
      even date herewith between the Parties relating to certain understandings
      and agreements in addition to those included in this Agreement.

                   "SURVIVING CORPORATION" shall mean UPHC as the surviving
      corporation resulting from the Merger.

                   "TAX" OR "TAXES" shall mean all federal, state, local, and
      foreign taxes, charges, fees, levies, imposts, duties, or other
      assessments, including income, gross receipts, excise, employment, sales,
      use, transfer, license, payroll, franchise, severance, stamp, occupation,
      windfall profits, environmental, federal highway use, commercial rent,
      customs duties, capital stock, paid-up capital, profits, withholding,
      Social Security, single business and unemployment, disability, real
      property, personal property, registration, ad valorem, value added,
      alternative or add-on minimum, estimated, or other tax of any kind
      whatsoever, imposed or required to be withheld by the United States or
      any state, local, or foreign government or subdivision or agency thereof,
      including any interest, penalties, or additions thereto.

                   "TAXABLE PERIOD" shall mean any period prescribed by any
      governmental authority, including the United States or any state, local,
      or foreign government or subdivision or agency thereof for which a Tax
      Return is required to be filed or Tax is required to be paid.

                   "TAX RETURN" shall mean any report, return, information
      return, or other information required to be supplied to a taxing
      authority in connection with Taxes, including any return of an affiliated
      or combined or unitary group that includes a Party or its Subsidiaries.

                   "TBCA" shall mean the Tennessee Business Corporation Act.

                   "UPC CAPITAL STOCK" shall mean, collectively, the UPC Common
      Stock, the UPC Preferred Stock and any other class or series of capital
      stock of UPC.

                   "UPC CHARTER AMENDMENT" shall mean the proposal to amend
      UPC's Restated Charter of Incorporation to increase the number of
      authorized shares of UPC Common Stock by not less than 100,000,000, which
      may be submitted to the stockholders of UPC for consideration and
      approval at the UPC Stockholders' Meeting or the 1998 annual meeting of
      stockholders of UPC.

                   "UPC COMMON STOCK" shall mean the $5.00 par value common
      stock of UPC.

                   "UPC FINANCIAL STATEMENTS" shall mean (i) the consolidated
      balance sheets (including related notes and schedules, if any) of UPC as
      of September 30, 1997, and as of December 31, 1996 and 1995, and the
      related statements of earnings, changes in





                                     - 49 -
<PAGE>   55


      stockholders' equity, and cash flows (including related notes and
      schedules, if any) for the nine months ended September 30, 1997 and for
      each of the three years ended December 31, 1996, 1995 and 1994, as filed
      by UPC in SEC Documents and (ii) the consolidated balance sheets of UPC
      (including related notes and schedules, if any) and related statements of
      earnings, changes in stockholders' equity, and cash flows (including
      related notes and schedules, if any) included in SEC Documents filed with
      respect to periods ended subsequent to September 30, 1997.

                   "UPC PREFERRED STOCK" shall mean the no par value preferred
      stock of UPC and shall include the (i) Series A Preferred Stock and (ii)
      Series E 8% Cumulative, Convertible Preferred Stock, of UPC ("UPC Series
      E Preferred Stock").

                   "UPC RIGHTS" shall mean the preferred stock purchase rights
      issued pursuant to the UPC Rights Agreement.

                   "UPC RIGHTS AGREEMENT" shall mean that certain Rights
      Agreement, dated January 19, 1989, between UPC and Union Planters Bank,
      National Association, as Rights Agent.

                   "UPC SUBSIDIARIES" shall mean the Subsidiaries of UPC and
      any corporation, bank, or other organization acquired as a Subsidiary of
      UPC in the future and owned by UPC at the Effective Time.

                   "UPHC" shall mean the wholly-owned subsidiary of UPC
      organized under the Laws of the State of Tennessee.
 
                   "UPHC COMMON STOCK" shall mean the $1.00 par value common
      stock of UPHC.

                   (b)    The terms set forth below shall have the meanings
      ascribed thereto in the referenced sections:

<TABLE>
     <S>                                                       <C>
     Charter                                                   Section 7.2(f)
     Charter Agreement                                         Section 7.2(f)
     Closing                                                   Section 1.2
     Effective Time                                            Section 1.3
     Exchange Agent                                            Section 4.1
     Exchange Ratio                                            Section 3.1(c)
     Indemnified Party                                         Section 8.15
     Magna Benefit Plans                                       Section 5.13(a)
     Magna Contracts                                           Section 5.14
     Magna ERISA Affiliate                                     Section 5.13(e)
     Magna ERISA Plan                                          Section 5.13(a)
     Magna Rights                                              Section 3.6(a)
     Magna Pension Plan                                        Section 5.13(a)
</TABLE>





                                     - 50 -
<PAGE>   56



<TABLE>
    <S>                                                       <C>
    Magna SEC Reports                                         Section 5.5(a)
    Merger                                                    Section 1.1
    Takeover Laws                                             Section 5.19
    Tax Opinion                                               Section 9.1(g)
    UPC ERISA Affiliate                                       Section 6.17
    UPC SEC Reports                                           Section 6.5(a)
</TABLE>

                   (c)    Any singular term in this Agreement shall be deemed
to include the plural, and any plural term the singular.  Whenever the words
"include," "includes," or "including" are used in this Agreement, they shall be
deemed followed by the words "without limitation."

             11.2  EXPENSES.

                   (a)    Except as otherwise provided in this Section 11.2,
each of the Parties shall bear and pay all direct costs and expenses incurred
by it or on its behalf in connection with the transactions contemplated
hereunder, including filing, registration, and application fees, printing fees,
and fees and expenses of its own financial or other consultants, investment
bankers, accountants, and counsel, except that each of the Parties shall bear
and pay one-half of the printing costs incurred in connection with the printing
of the Registration Statement and the Joint Proxy Statement.

                   (b)    Nothing contained in this Section 11.2 shall
constitute or shall be deemed to constitute liquidated damages for the willful
breach by a Party of the terms of this Agreement or otherwise limit the rights
of the nonbreaching Party.

             11.3  BROKERS AND FINDERS.  Except for Donaldson, Lufkin &
Jenrette as to Magna and except for Stifel Nicolaus & Co. as to UPC, each of
the Parties represents and warrants that neither it nor any of its officers,
directors, employees, or Affiliates has employed any broker or finder or
incurred any Liability for any financial advisory fees, investment bankers'
fees, brokerage fees, commissions, or finders' fees in connection with this
Agreement or the transactions contemplated hereby.  In the event of a claim by
any broker or finder based upon his, her, or its representing or being retained
by or allegedly representing or being retained by Magna or UPC, each of Magna
and UPC, as the case may be, agrees to indemnify and hold the other Party
harmless of and from any Liability in respect of any such claim.

             11.4  ENTIRE AGREEMENT.  Except as otherwise expressly provided
herein, this Agreement (including the documents and instruments referred to
herein) constitutes the entire agreement between the Parties with respect to
the transactions contemplated hereunder and supersedes all prior arrangements
or understandings with respect thereto, written or oral (including any
provision of the Confidentiality Agreements which would act to preclude UPC (or
any Holder as defined in the Stock Option Agreement from exercising its rights
under the Stock Option Agreement) to the extent that the Stock Option Agreement
is in force and effect, but excluding the Supplemental Letter).  Nothing in
this Agreement expressed or implied, is intended to confer upon any Person,
other than the Parties or their respective successors, any rights,





                                     - 51 -
<PAGE>   57


remedies, obligations, or liabilities under or by reason of this Agreement,
other than as provided in Sections 8.13 and 8.15 of this Agreement.

             11.5  AMENDMENTS.  To the extent permitted by Law, this Agreement
may be amended by a subsequent writing signed by each of the Parties upon the
approval of the Boards of Directors of each of the Parties, whether before or
after stockholder approval of this Agreement has been obtained; provided, that
the provisions of this Agreement relating to the manner or basis in which
shares of Magna Common Stock will be exchanged for UPC Common Stock shall not
be amended after the Stockholders' Meetings without the requisite approval of
the holders of the issued and outstanding shares of UPC Common Stock and Magna
Common Stock, as the case may be, entitled to vote thereon.

             11.6  WAIVERS.

                   (a)    Prior to or at the Effective Time, UPC, acting
through its Board of Directors, chief executive officer, chief financial
officer, or other authorized officer, shall have the right to waive any Default
in the performance of any term of this Agreement by Magna, to waive or extend
the time for the compliance or fulfillment by Magna of any and all of its
obligations under this Agreement, and to waive any or all of the conditions
precedent to the obligations of UPC under this Agreement, except any condition
which, if not satisfied, would result in the violation of any Law.  No such
waiver shall be effective unless in writing signed by a duly authorized officer
of UPC.

                   (b)    Prior to or at the Effective Time, Magna, acting
through its Board of Directors, chief executive officer, chief financial
officer, or other authorized officer, shall have the right to waive any Default
in the performance of any term of this Agreement by UPC, to waive or extend the
time for the compliance or fulfillment by UPC of any and all of its obligations
under this Agreement, and to waive any or all of the conditions precedent to
the obligations of Magna under this Agreement, except any condition which, if
not satisfied, would result in the violation of any Law.  No such waiver shall
be effective unless in writing signed by a duly authorized officer of Magna.

                   (c)    The failure of any Party at any time or times to
require performance of any provision hereof shall in no manner affect the right
of such Party at a later time to enforce the same or any other provision of
this Agreement.  No waiver of any condition or of the breach of any term
contained in this Agreement in one or more instances shall be deemed to be or
construed as a further or continuing waiver of such condition or breach or a
waiver of any other condition or of the breach of any other term of this
Agreement.

             11.7  ASSIGNMENT.  Except as expressly contemplated hereby,
neither this Agreement nor any of the rights, interests, or obligations
hereunder shall be assigned by any Party hereto (whether by operation of Law or
otherwise) without the prior written consent of the other Party.  Subject to
the preceding sentence, this Agreement will be binding upon, inure to the
benefit of, and be enforceable by the Parties and their respective successors
and assigns.





                                     - 52 -
<PAGE>   58


             11.8  NOTICES.  All notices or other communications which are
required or permitted hereunder shall be in writing and sufficient if delivered
by hand, by facsimile transmission, by registered or certified mail, postage
pre-paid, or by courier or overnight carrier, to the persons at the addresses
set forth below (or at such other address as may be provided hereunder), and
shall be deemed to have been delivered as of the date so delivered:

             Magna:                       Magna Group, Inc.
                                          One Magna Place
                                          1401 South Brentwood Boulevard
                                          St. Louis, Missouri  63144-1401
                                          Telecopy Number:  (314) 963-2581
                             
                                          Attention:  G. Thomas Andes
                                                      Chairman, President, and
                                                         Chief Executive Officer
                             
             Copy to Counsel:             WACHTELL LIPTON ROSEN & KATZ
                                          51 West 52nd Street
                                          New York, New York  10019
                                          Telecopy Number:  (212) 403-2000
                             
                                          Attention:  Edward D. Herlihy
                             
             UPC:                         UNION PLANTERS CORPORATION
                                          7130 Goodlett Farms Parkway
                                          Memphis, Tennessee  38018
                                          Telecopy Number:  (901) 580-2939
                             
                                          Attention:  Jackson W. Moore
                                                      President and Chief 
                                                        Operating Officer
                             
             Copy to Counsel:             UNION PLANTERS CORPORATION
                                          7130 Goodlett Farms Parkway
                                          Memphis, Tennessee  38018
                                          Telecopy Number:  (901) 580-2939

                                          Attention:  E. James House, Jr.
         
                                          ALSTON & BIRD LLP
                                          601 Pennsylvania Avenue, N.W.
                                          North Building, Suite 250
                                          Washington, D.C. 20004
                                          Telecopy Number:  (202) 508-3333

                                          Attention:  Frank M. Conner III





                                     - 53 -
<PAGE>   59


             11.9  GOVERNING LAW.  This Agreement shall be governed by and
construed in accordance with the Laws of the State of Tennessee, without regard
to any applicable conflicts of Laws, except to the extent that the Laws of the
State of Delaware relate to the consummation of the Merger.

            11.10  COUNTERPARTS.  This Agreement may be executed in two or more
counterparts, each of which shall be deemed to be an original, but all of which
together shall constitute one and the same instrument.

            11.11  CAPTIONS.  The captions contained in this Agreement are for
reference purposes only and are not part of this Agreement.

            11.12  INTERPRETATIONS.  Neither this Agreement nor any uncertainty
or ambiguity herein shall be construed or resolved against any Party, whether
under any rule of construction or otherwise.  No Party to this Agreement shall
be considered the draftsman.  The Parties acknowledge and agree that this
Agreement has been reviewed, negotiated, and accepted by all Parties and their
attorneys and shall be construed and interpreted according to the ordinary
meaning of the words used so as fairly to accomplish the purposes and
intentions of the Parties.

            11.13  ENFORCEMENT OF AGREEMENT.  The Parties hereto agree that
irreparable damage would occur in the event that any of the provisions of this
Agreement was not performed in accordance with its specific terms or was
otherwise breached.  It is accordingly agreed that the Parties shall be
entitled to an injunction or injunctions to prevent breaches of this Agreement
and to enforce specifically the terms and provisions hereof in any court of the
United States or any state having jurisdiction, this being in addition to any
other remedy to which they are entitled at law or in equity.

            11.14  SEVERABILITY.  Any term or provision of this Agreement which
is invalid or unenforceable in any jurisdiction shall, as to that jurisdiction,
be ineffective to the extent of such invalidity or unenforceability without
rendering invalid or unenforceable the remaining terms and provisions of this
Agreement or affecting the validity or enforceability of any of the terms or
provisions of this Agreement in any other jurisdiction.  If any provision of
this Agreement is so broad as to be unenforceable, the provision shall be
interpreted to be only so broad as is enforceable.






                                     - 54 -
<PAGE>   60



            IN WITNESS WHEREOF, each of the Parties has caused this Agreement
to be executed on its behalf and its corporate seal to be hereunto affixed and
attested by officers thereunto as of the day and year first above written.


ATTEST:                                  MAGNA GROUP, INC.
                                   
                                   
By: /s/ Carolyn B. Ryseff                By: /s/ G. Thomas Andes               
   --------------------------------         ------------------------------------
    Carolyn B. Ryseff                        G. Thomas Andes
    Secretary                                Chairman, President, and
                                                Chief Executive Officer
                                   
[CORPORATE SEAL]                   
                                   
                                   
ATTEST:                                  UNION PLANTERS CORPORATION
                                   
                                   
By: /s/ E. James House, Jr.              By: /s/ Benjamin W. Rawlins, Jr.    
   --------------------------------         -----------------------------------
    E. James House, Jr.                      Benjamin W. Rawlins, Jr.
    Secretary                                Chairman and Chief Executive 
                                             Officer
[CORPORATE SEAL]





                                     - 55 -

<PAGE>   1
                                                                       EXHIBIT 2

                             STOCK OPTION AGREEMENT

        THIS STOCK OPTION AGREEMENT (this "Agreement") is made and entered into
as of February 22, 1998, by and between Magna Group, Inc., a Delaware
corporation ("Issuer"), and Union Planters Corporation, a Tennessee corporation
("Grantee").

        WHEREAS, Grantee and Issuer have entered into that certain Agreement and
Plan of Reorganization, dated as of February 22, 1998 (the "Merger Agreement"),
providing for, among other things, the merger of Issuer with and into Union
Planters Holding Corporation ("UPHC"), a wholly-owned subsidiary of Grantee
organized under the Laws of the State of Tennessee, with UPHC as the surviving
entity; and

        WHEREAS, as a condition and inducement to Grantee's execution of the
Merger Agreement, Grantee has required that Issuer agree, and Issuer has agreed,
to grant Grantee the Option (as defined below);

        NOW, THEREFORE, in consideration of the respective representations,
warranties, covenants and agreements set forth herein and in the Merger
Agreement, and intending to be legally bound hereby, Issuer and Grantee agree as
follows:

        1.     DEFINED TERMS.  Capitalized terms which are used but not defined 
herein shall have  the meanings ascribed to such terms in the Merger Agreement.

        2.     GRANT OF OPTION. Subject to the terms and conditions set forth
herein, Issuer hereby grants to Grantee an irrevocable option (the "Option") to
purchase up to 6,497,180 shares (as adjusted as set forth herein, the "Option
Shares," which shall include the Option Shares before and after any transfer of
such Option Shares) of common stock, $2.00 par value per share ("Issuer Common
Stock"), of Issuer at a purchase price per Option Share (subject to adjustment
as set forth herein, the "Purchase Price") equal to the first closing price per
share of Issuer Common Stock following public announcement of the execution of
the Merger Agreement as reported on the NYSE-Composite Transactions List;
provided, however, that in no event shall the number of shares of Issuer Common
Stock for which this Option is exercisable exceed the lesser of (i) 19.9% of the
Issuer's issued and outstanding shares of Issuer Common Stock without giving
effect to any shares subject to or issued pursuant to the Option and (ii) that
minimum number of shares of Issuer Common Stock which when aggregated with any
other shares of Issuer Common Stock beneficially owned by Grantee or any
Affiliate thereof would cause the provisions of any Takeover Laws of the DGCL to
be applicable to the Merger. Each Option Share to be issued upon exercise of the
Option shall be accompanied by and be deemed to represent a Preferred Stock
Purchase Right.

        3.     EXERCISE OF OPTION.

               (a) Provided that (i) Grantee or Holder (as hereinafter
defined), as applicable, shall not be in material breach of its agreements or
covenants contained in this Agreement or the Merger Agreement, and (ii) no
preliminary or permanent injunction or other order against the 


<PAGE>   2

delivery of shares covered by the Option issued by any court of competent
jurisdiction in the United States shall be in effect, Holder may exercise the
Option, in whole or in part, at any time and from time to time following the
occurrence of a Purchase Event and prior to the termination of the Option. The
Option shall terminate and be of no further force and effect upon the earliest
to occur of (A) the Effective Time, (B) termination of the Merger Agreement in
accordance with the terms thereof prior to the occurrence of a Purchase Event or
a Preliminary Purchase Event (other than a termination of the Merger Agreement
by Grantee pursuant to (i) Section 10.1(b) thereof (but only if such termination
was a result of a willful breach by Issuer) or (ii) Section 10.1(c) thereof
(each a "Default Termination")), (C) 18 months after a Default Termination, and
(D) 18 months after any termination of the Merger Agreement following the
occurrence of a Purchase Event or a Preliminary Purchase Event. Any purchase of
shares upon exercise of the Option shall be subject to compliance with
applicable law, including, without limitation, the Bank Holding Company Act of
1956, as amended (the "BHC Act"). The term "Holder" shall mean the holder or
holders of the Option from time to time, and which initially is the Grantee. The
rights set forth in Section 8 shall terminate when the right to exercise the
Option terminates (other than as a result of a complete exercise of the Option)
as set forth herein.

                (b)     As used herein, a "Purchase Event" means any of the
following events subsequent to the date of this Agreement:

                        (i) without Grantee's prior written consent, Issuer
        shall have authorized, recommended, publicly proposed or publicly
        announced an intention to authorize, recommend or propose, or entered
        into an agreement with any person (other than Grantee or any Subsidiary
        of Grantee) to effect an Acquisition Transaction (as defined below). As
        used herein, the term Acquisition Transaction shall mean (A) a merger,
        consolidation or similar transaction involving Issuer or any of its
        Subsidiaries (other than transactions solely between Issuer's
        Subsidiaries and transactions involving Issuer or any Subsidiary in
        which the voting securities of Issuer outstanding immediately prior
        thereto continue to represent (by either remaining outstanding or being
        converted into securities of the surviving entity or the parent thereof)
        at least 75% of the combined voting power of the voting securities of
        the Issuer or the surviving entity or the parent thereof outstanding
        immediately after the consummation of the transaction), (B) the
        disposition, by sale, lease, exchange or otherwise, of Assets of Issuer
        or any of its Subsidiaries representing in either case 20% or more of
        the consolidated assets of Issuer and its Subsidiaries, or (C) the
        issuance, sale or other disposition of (including by way of merger,
        consolidation, share exchange or any similar transaction) securities
        representing 20% or more of the voting power of Issuer or any of its
        Subsidiaries (any of the foregoing, an "Acquisition Transaction"); or

                        (ii) any person (other than Grantee or any Subsidiary of
        Grantee) shall have acquired beneficial ownership (as such term is
        defined in Rule 13d-3 promulgated under the Securities Exchange Act of
        1934, as amended (the "Exchange Act"), of or the right to acquire
        beneficial ownership of, or any "group" (as such term is defined under
        the Exchange Act), other than a group of which Grantee or any of its
        Subsidiaries is a member, shall have been formed which beneficially owns
        or has the right to acquire beneficial ownership of, 20% or more of the
        then-outstanding shares of Issuer Common Stock.

                                      -2-

<PAGE>   3

                (c)      As used herein, a "Preliminary Purchase Event" means 
any of the following events:

                        (i) any person (other than Grantee or any Subsidiary of
        Grantee) shall have commenced (as such term is defined in Rule 14d-2
        under the Exchange Act), or shall have filed a registration statement
        under the Securities Act of 1933, as amended (the "Securities Act") with
        respect to, a tender offer or exchange offer to purchase any shares of
        Issuer Common Stock such that, upon consummation of such offer, such
        person would own or control 15% or more of the then-outstanding shares
        of Issuer Common Stock (such an offer being referred to herein as a
        "Tender Offer" or an "Exchange Offer," respectively); or

                        (ii) the holders of Issuer Common Stock shall not have
        approved the Merger Agreement at the meeting of such stockholders held
        for the purpose of voting on the Merger Agreement, such meeting shall
        not have been held or shall have been canceled prior to termination of
        the Merger Agreement, or Issuer's Board of Directors shall have
        withdrawn or modified in a manner adverse to Grantee the recommendation
        of Issuer's Board of Directors with respect to the Merger Agreement, in
        each case after it shall have been publicly announced that any person
        (other than Grantee or any Subsidiary of Grantee) shall have (A) made a
        proposal to engage in an Acquisition Transaction, (B) commenced a Tender
        Offer or filed a registration statement under the Securities Act with
        respect to an Exchange Offer, or (C) filed an application (or given a
        notice), whether in draft or final form, under any federal or state
        statute or regulation (including a notice filed under the HSR Act and an
        application or notice filed under the BHC Act, the Bank Merger Act, or
        the Change in Bank Control Act of 1978) seeking the Consent to an
        Acquisition Transaction from any federal or state governmental or
        regulatory authority or agency.

As used in this Agreement, "person" shall have the meaning specified in Sections
3(a)(9) and 13(d)(3) of the Exchange Act.

                (d) In the event Holder wishes to exercise the Option, it shall
send to Issuer a written notice (the date of which being herein referred to as
the "Notice Date") specifying (i) the total number of Option Shares it intends
to purchase pursuant to such exercise and (ii) a place and date not earlier than
three business days nor later than 30 business days from the Notice Date for the
closing (the "Closing") of such purchase (the "Closing Date"). If prior Consent
of any governmental or regulatory agency or authority is required in connection
with such purchase, Issuer shall cooperate with Holder in the filing of the
required notice or application for such Consent and the obtaining of such
Consent and the Closing shall occur immediately following receipt of such
Consents (and expiration of any mandatory waiting periods).

        4.      PAYMENT AND DELIVERY OF CERTIFICATES.

                (a) On each Closing Date, Holder shall (i) pay to Issuer, in
immediately available funds by wire transfer to a bank account designated by
Issuer, an amount equal to the Purchase Price multiplied by the number of Option
Shares to be purchased on such Closing Date, and

                                      -3-


<PAGE>   4
(ii) present and surrender this Agreement to the Issuer at the address of the
Issuer specified in Section 13(f) hereof.

                (b) At each Closing, simultaneously with the delivery of
immediately available funds and surrender of this Agreement as provided in
Section 4(a), (i) Issuer shall deliver to Holder (A) a certificate or
certificates representing the Option Shares to be purchased at such Closing,
which Option Shares shall be free and clear of all liens, claims, charges and
encumbrances of any kind whatsoever and subject to no pre-emptive rights, and
(B) if the Option is exercised in part only, an executed new agreement with the
same terms as this Agreement evidencing the right to purchase the balance of the
shares of Issuer Common Stock purchasable hereunder, and (ii) Holder shall
deliver to Issuer a letter agreeing that Holder shall not offer to sell or
otherwise dispose of such Option Shares in violation of applicable federal and
state law or of the provisions of this Agreement.

                (c) In addition to any other legend that is required by
applicable law, certificates for the Option Shares delivered at each Closing
shall be endorsed with a restrictive legend which shall read substantially as
follows:

        THE TRANSFER OF THE STOCK REPRESENTED BY THIS CERTIFICATE IS SUBJECT TO
        RESTRICTIONS ARISING UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND
        PURSUANT TO THE TERMS OF A STOCK OPTION AGREEMENT DATED AS OF FEBRUARY
        22, 1998. A COPY OF SUCH AGREEMENT WILL BE PROVIDED TO THE HOLDER HEREOF
        WITHOUT CHARGE UPON RECEIPT BY THE ISSUER OF A WRITTEN REQUEST THEREFOR.

It is understood and agreed that: (i) the references in the above legend to
resale restrictions of the Securities Act shall be removed by delivery of
substitute certificate(s) without such reference if Holder shall have delivered
to Issuer a copy of a letter from the staff of the SEC, or an opinion of counsel
in form and substance reasonably satisfactory to Issuer and its counsel, to the
effect that such legend is not required for purposes of the Securities Act; (ii)
the references in the above legend to the provisions of this Agreement shall be
removed by delivery of substitute certificate(s) without such reference if the
shares have been sold or transferred in compliance with the provisions of this
Agreement and under circumstances that do not require the retention of such
reference; and (iii) the legend shall be removed in its entirety if the
conditions in the preceding clauses (i) and (ii) are both satisfied.

        5.      REPRESENTATIONS AND WARRANTIES OF ISSUER. Issuer hereby 
represents and warrants to Grantee as follows:

                (a) Issuer has all requisite corporate power and authority to
        enter into this Agreement and, subject to any approvals referred to
        herein, to consummate the transactions contemplated hereby. The 
        execution and delivery of this Agreement and the consummation of the 
        transactions contemplated hereby have been duly authorized by all 
        necessary 

                                      -4-

<PAGE>   5

        corporate action on the part of Issuer. This Agreement has been duly 
        executed and delivered by Issuer.

                (b) Issuer has taken all necessary corporate action to authorize
        and reserve and to permit it to issue, and, at all times from the date
        hereof until the obligation to deliver Issuer Common Stock upon the
        exercise of the Option terminates, will have reserved for issuance, upon
        exercise of the Option, the number of shares of Issuer Common Stock
        necessary for Holder to exercise the Option, and Issuer will take all
        necessary corporate action to authorize and reserve for issuance all
        additional shares of Issuer Common Stock or other securities which may
        be issued pursuant to Section 7 upon exercise of the Option. The shares
        of Issuer Common Stock to be issued upon due exercise of the Option,
        including all additional shares of Issuer Common Stock or other
        securities which may be issuable pursuant to Section 7, upon issuance
        pursuant hereto, shall be duly and validly issued, fully paid, and
        nonassessable, and shall be delivered free and clear of all liens,
        claims, charges, and encumbrances of any kind or nature whatsoever,
        including any preemptive rights of any stockholder of Issuer.

        6.      REPRESENTATIONS AND WARRANTIES OF GRANTEE. Grantee hereby 
represents and warrants to Issuer that:

                (a) Grantee has all requisite corporate power and authority to
        enter into this Agreement and, subject to any approvals or consents
        referred to herein, to consummate the transactions contemplated hereby.
        The execution and delivery of this Agreement and the consummation of the
        transactions contemplated hereby have been duly authorized by all
        necessary corporate action on the part of Grantee. This Agreement has
        been duly executed and delivered by Grantee.

                (b) This Option is not being, and any Option Shares or other
        securities acquired by Grantee upon exercise of the Option will not be,
        acquired with a view to the public distribution thereof and will not be
        transferred or otherwise disposed of except in a transaction registered
        or exempt from registration under the Securities Laws.

        7.      ADJUSTMENT UPON CHANGES IN CAPITALIZATION, ETC.

                (a) In the event of any change in Issuer Common Stock by reason
of a stock dividend, stock split, split-up, recapitalization, combination,
exchange of shares or similar transaction, the type and number of shares or
securities subject to the Option, and the Purchase Price therefor, shall be
adjusted appropriately, and proper provision shall be made in the agreements
governing such transaction, if any, so that Holder shall receive, upon exercise
of the Option, the number and class of shares or other securities or property
that Holder would have received in respect of Issuer Common Stock if the Option
had been exercised immediately prior to such event, or the record date therefor,
as applicable. If any additional shares of Issuer Common Stock are issued after
the date of this Agreement (other than pursuant to an event described in the
first sentence of this Section 7(a) or pursuant to this Option), the number of
shares of Issuer Common Stock subject to the Option shall be adjusted so that,
after such issuance, it, together 

                                      -5-

<PAGE>   6

with any shares of Issuer Common Stock previously issued pursuant hereto, shall
not exceed the lesser of (i) 19.9% of the number of shares of Issuer Common
Stock then issued and outstanding, without giving effect to any shares subject
to or issued pursuant to the Option and (ii) that minimum number of shares of
Issuer Common Stock which when aggregated with any other shares of Issuer Common
Stock beneficially owned by Grantee or any Affiliate thereof would cause the
provisions of any Takeover Laws of the DGCL to be applicable to the Merger.

                (b) In the event that Issuer shall enter in an agreement: (i) to
consolidate with or merge into any person, other than Grantee or one of its
Subsidiaries, and shall not be the continuing or surviving corporation of such
consolidation or merger; (ii) to permit any person, other than Grantee or one of
its Subsidiaries, to merge into Issuer and Issuer shall be the continuing or
surviving corporation, but, in connection with such merger, the then outstanding
shares of Issuer Common Stock shall be changed into or exchanged for stock or
other securities of Issuer or any other person or cash or any other property or
the outstanding shares of Issuer Common Stock immediately prior to such merger
shall after such merger represent less than 50% of the outstanding shares and
share equivalents of the merged company; or (iii) to sell or otherwise transfer
all or substantially all of its Assets to any person, other than Grantee or one
of its Subsidiaries, then, and in each such case, the agreement governing such
transaction shall make proper provisions so that the Option shall, upon the
consummation of any such transaction and upon the terms and conditions set forth
herein, be converted into, or exchanged for, an option (the "Substitute
Option"), at the election of Grantee, of either (x) the Acquiring Corporation
(as defined below) or (y) any person that controls the Acquiring Corporation (in
each case, such person being referred to as the "Substitute Option Issuer").

                (c) The Substitute Option shall have the same terms as the
Option, provided that, if the terms of the Substitute Option cannot, for legal
reasons, be the same as the Option, such terms shall be as similar as possible
and in no event less advantageous to Grantee. The Substitute Option Issuer shall
also enter into an agreement with the then-holder or holders of the Substitute
Option in substantially the same form as this Agreement, which shall be
applicable to the Substitute Option.

                (d) The Substitute Option shall be exercisable for such number
of shares of the Substitute Common Stock (as hereinafter defined) as is equal to
the Assigned Value (as hereinafter defined) multiplied by the number of shares
of the Issuer Common Stock for which the Option was theretofore exercisable,
divided by the Average Price (as hereinafter defined). The exercise price of the
Substitute Option per share of the Substitute Common Stock (the "Substitute
Purchase Price") shall then be equal to the Purchase Price multiplied by a
fraction in which the numerator is the number of shares of the Issuer Common
Stock for which the Option was theretofore exercisable and the denominator is
the number of shares for which the Substitute Option is exercisable.

                (e) The following terms have the meanings indicated:

                    (i) "Acquiring Corporation" shall mean (x) the
        continuing or surviving corporation of a consolidation or merger with
        Issuer (if other than Issuer), (y) Issuer in a 

                                      -6-


<PAGE>   7

        merger in which Issuer is the continuing or surviving person, and (z) 
        the transferee of all or any substantial part of the Issuer's assets (or
        the assets of its Subsidiaries).

                    (ii) "Substitute Common Stock" shall mean the common
        stock issued by the Substitute Option Issuer upon exercise of the
        Substitute Option.

                   (iii) "Assigned Value" shall mean the highest of (x) the
        price per share of the Issuer Common Stock at which a Tender Offer or
        Exchange Offer therefor has been made by any person (other than
        Grantee), (y) the price per share of the Issuer Common Stock to be paid
        by any person (other than the Grantee) pursuant to an agreement with
        Issuer, and (z) the highest last sale price per share of Issuer Common
        Stock quoted on the NYSE (or if Issuer Common Stock is not quoted on the
        NYSE, the highest bid price per share on any day as quoted on the
        principal trading market or securities exchange on which such shares are
        traded as reported by a recognized source chosen by Grantee) within the
        six-month period immediately preceding the agreement; provided, that in
        the event of a sale of less than all of Issuer's assets, the Assigned
        Value shall be the sum of the price paid in such sale for such assets
        and the current market value of the remaining assets of Issuer as
        determined by a nationally recognized investment banking firm selected
        by Grantee (or by a majority in interest of the Grantees if there shall
        be more than one Grantee (a "Grantee Majority")) and reasonably
        acceptable to Issuer, divided by the number of shares of the Issuer
        Common Stock outstanding at the time of such sale. In the event that an
        exchange offer is made for the Issuer Common Stock or an agreement is
        entered into for a merger or consolidation involving consideration other
        than cash, the value of the securities or other property issuable or
        deliverable in exchange for the Issuer Common Stock shall be determined
        by a nationally recognized investment banking firm selected by Grantee
        and reasonably acceptable to Issuer (or if applicable, Acquiring
        Corporation). (If there shall be more than one Grantee, any such
        selection shall be made by a Grantee Majority.)

                    (iv) "Average Price" shall mean the average closing
        price of a share of the Substitute Common Stock for the one year
        immediately preceding the consolidation, merger or sale in question, but
        in no event higher than the last sale price of the shares of the
        Substitute Common Stock on the day preceding such consolidation, merger
        or sale; provided that if Issuer is the issuer of the Substitute Option,
        the Average Price shall be computed with respect to a share of common
        stock issued by Issuer, the person merging into Issuer or by any company
        which controls or is controlled by such merger person, as Grantee may
        elect.

                (f) In no event pursuant to any of the foregoing paragraphs
shall the Substitute Option be exercisable for more than 19.9% of the aggregate
of the shares of the Substitute Common Stock outstanding prior to exercise of
the Substitute Option. In the event that the Substitute Option would be
exercisable for more than 19.9% of the aggregate of the shares of Substitute
Common Stock but for this clause (f), the Substitute Option Issuer shall make a
cash payment to Grantee equal to the excess of (i) the value of the Substitute
Option without giving effect to the limitation in this clause (f) over (ii) the
value of the Substitute Option after giving effect to the limitation in this
clause (f). This difference in value shall be determined by a 

                                      -7-

<PAGE>   8

nationally recognized investment banking firm selected by Grantee (or a
Grantee Majority) and reasonably acceptable to the Acquiring Corporation.

                (g) Issuer shall not enter into any transaction described in
subsection (b) of this Section 7 unless the Acquiring Corporation and any person
that controls the Acquiring Corporation assume in writing all the obligations of
Issuer hereunder and take all other actions that may be necessary so that the
provisions of this Section 7 are given full force and effect (including, without
limitation, any action that may be necessary so that the shares of Substitute
Common Stock are in no way distinguishable from or have lesser economic value
than other shares of common stock issued by the Substitute Option Issuer).

                (h) The provisions of Sections 8, 9, 10, and 11 shall apply,
with appropriate adjustments, to any securities for which the Option becomes
exercisable pursuant to this Section 7 and, as applicable, references in such
sections to "Issuer," "Option," "Purchase Price" and "Issuer Common Stock" shall
be deemed to be references to "Substitute Option Issuer," "Substitute Option,"
"Substitute Purchase Price" and "Substitute Common Stock," respectively.

        8.      REPURCHASE AT THE OPTION OF HOLDER.

                (a) Subject to the last sentence of Section 3(a), at the request
of Holder at any time commencing upon the first occurrence of a Repurchase Event
(as defined in Section 8(d)) and ending 18 months immediately thereafter, Issuer
shall repurchase from Holder the Option and all shares of Issuer Common Stock
purchased by Holder pursuant hereto with respect to which Holder then has
beneficial ownership. The date on which Holder exercises its rights under this
Section 8 is referred to as the "Request Date." Such repurchase shall be at an
aggregate price (the "Section 8 Repurchase Consideration") equal to the sum of:

                        (i) the aggregate Purchase Price paid by Holder for any
        shares of Issuer Common Stock acquired by Holder pursuant to the Option
        with respect to which Holder then has beneficial ownership;

                        (ii) the excess, if any, of (x) the Applicable Price (as
        defined below) for each share of Issuer Common Stock over (y) the
        Purchase Price (subject to adjustment pursuant to Section 7), multiplied
        by the number of shares of Issuer Common Stock with respect to which the
        Option has not been exercised; and

                        (iii) the excess, if any, of the Applicable Price over
        the Purchase Price (subject to adjustment pursuant to Section 7) paid
        (or, in the case of Option Shares with respect to which the Option has
        been exercised but the Closing Date has not occurred, payable) by Holder
        for each share of Issuer Common Stock with respect to which the Option
        has been exercised and with respect to which Holder then has beneficial
        ownership, multiplied by the number of such shares.

                (b) If Holder exercises its rights under this Section 8, Issuer
shall, within ten business days after the Request Date, pay the Section 8
Repurchase Consideration to Holder in 

                                      -8-
<PAGE>   9

immediately available funds, and contemporaneously with such payment Holder
shall surrender to Issuer the Option and the certificates evidencing the shares
of Issuer Common Stock purchased thereunder with respect to which Holder then
has beneficial ownership, and Holder shall warrant that it has sole record and
beneficial ownership of such shares and that the same are then free and clear of
all liens, claims, charges and encumbrances of any kind whatsoever.
Notwithstanding the foregoing, to the extent that prior notification to or
Consent of any governmental or regulatory agency or authority is required in
connection with the payment of all or any portion of the Section 8 Repurchase
Consideration, Holder shall have the ongoing option to revoke its request for
repurchase pursuant to Section 8, in whole or in part, or to require that Issuer
deliver from time to time that portion of the Section 8 Repurchase Consideration
that it is not then so prohibited from paying and promptly file the required
notice or application for Consent and expeditiously process the same (and each
party shall cooperate with the other in the filing of any such notice or
application and the obtaining of any such Consent). If any governmental or
regulatory agency or authority disapproves of any part of Issuer's proposed
repurchase pursuant to this Section 8, Issuer shall promptly give notice of such
fact to Holder. If any governmental or regulatory agency or authority prohibits
the repurchase in part but not in whole, then Holder shall have the right (i) to
revoke the repurchase request or (ii) to the extent permitted by such agency or
authority, determine whether the repurchase should apply to the Option and/or
Option Shares and to what extent to each, and Holder shall thereupon have the
right to exercise the Option as to the number of Option Shares for which the
Option was exercisable at the Request Date less the sum of the number of shares
covered by the Option in respect of which payment has been made pursuant to
Section 8(a)(ii) and the number of shares covered by the portion of the Option
(if any) that has been repurchased. Holder shall notify Issuer of its
determination under the preceding sentence within five business days of receipt
of notice of disapproval of the repurchase.

                    Notwithstanding anything herein to the contrary, all
of Holder's rights under this Section 8 shall terminate on the date of
termination of this Option pursuant to Section 3(a).

                (c) For purposes of this Agreement, the "Applicable Price" means
the highest of (i) the highest price per share of Issuer Common Stock paid for
any such share by the person or groups described in Section 8(d)(i), (ii) the
price per share of Issuer Common Stock received by holders of Issuer Common
Stock in connection with any merger or other business combination transaction
described in Section 7(b)(i), 7(b)(ii) or 7(b)(iii), or (iii) the highest last
sale price per share of Issuer Common Stock quoted on the NYSE (or if Issuer
Common Stock is not quoted on the NYSE, the highest bid price per share as
quoted on the principal trading market or securities exchange on which such
shares are traded as reported by a recognized source chosen by Holder) during
the 60 business days preceding the Request Date; provided, however, that in the
event of a sale of less than all of Issuer's Assets, the Applicable Price shall
be the sum of the price paid in such sale for such assets and the current market
value of the remaining assets of Issuer as determined by an independent
nationally recognized investment banking firm selected by Holder and reasonably
acceptable to Issuer (which determination shall be conclusive for all purposes
of this Agreement), divided by the number of shares of the Issuer Common Stock
outstanding at the time of such sale. If the consideration to be offered, paid
or received pursuant to either of the foregoing clauses (i) or (ii) shall be
other than in cash, the value of such consideration shall be determined in good
faith by an independent nationally recognized investment banking firm 

                                      -9-
<PAGE>   10

selected by Holder and reasonably acceptable to Issuer, which determination
shall be conclusive for all purposes of this Agreement.

                (d) As used herein, a "Repurchase Event" shall occur if (i) any
person (other than Grantee or any subsidiary of Grantee shall have acquired
beneficial ownership (as such term is defined in Rule 13d-3 promulgated under
the Exchange Act), or the right to acquire beneficial ownership, or any "group"
(as such term is defined under the Exchange Act) shall have been formed which
beneficially owns or has the right to acquire beneficial ownership of 50% or
more of the then-outstanding shares of Issuer Common Stock, or (ii) any of the
transactions described in Section 7(b)(i), 7(b)(ii), or 7(iii) shall be
consummated.

        9.      REGISTRATION RIGHTS.

                (a) Issuer shall, subject to the conditions of subparagraph (c)
below, if requested by any Holder, including Grantee and any permitted
transferee ("Selling Holder"), as expeditiously as possible prepare and file a
registration statement under the Securities Laws if necessary in order to permit
the sale or other disposition of any or all shares of Issuer Common Stock or
other securities that have been acquired by or are issuable to Selling Holder
upon exercise of the Option in accordance with the intended method of sale or
other disposition stated by Holder in such request (it being understood and
agreed that any such sale or other disposition shall be effected on a widely
distributed basis so that, upon consummation thereof, no purchaser or transferee
shall beneficially own more than 5% of the shares of Issuer Common Stock then
outstanding), including, without limitation, a "shelf" registration statement
under Rule 415 under the Securities Act or any successor provision, and Issuer
shall use its best efforts to qualify such shares or other securities for sale
under any applicable state securities laws. Each such Holder shall provide all
information reasonably requested by Issuer for inclusion in any registration
statement to be filed hereunder.

                (b) If Issuer at any time after the exercise of the Option, but
prior to the termination of the Option, proposes to register any shares of
Issuer Common Stock under the Securities Laws in connection with an underwritten
public offering of such Issuer Common Stock, Issuer will promptly give written
notice to Holder of its intention to do so and, upon the written request of
Holder given within 30 days after receipt of any such notice (which request
shall specify the number of shares of Issuer Common Stock intended to be
included in such underwritten public offering by Selling Holder), Issuer will
use all reasonable efforts to cause all such shares, the holders of which shall
have requested participation in such registration, to be so registered and
included in such underwritten public offering; provided, that Issuer may elect
to not cause any such shares to be so registered (i) if the underwriters in good
faith determine that the inclusion of such shares would interfere with the
successful marketing of the shares of Issuer Common Stock for the account of
Issuer, or (ii) in the case of a registration solely to implement a dividend
reinvestment or similar plan, an employee benefit plan or a registration filed
on Form S-4 or any successor form, or a registration filed on a form which does
not permit registrations of resales; provided, further, that such election
pursuant to clause (i) may only be made once. If some but not all the shares of
Issuer Common Stock, with respect to which Issuer shall have received requests
for registration pursuant to this subparagraph (b), shall be excluded from such

                                      -10-


<PAGE>   11

registration, Issuer shall make appropriate allocation of shares to be
registered among Selling Holders and any other person (other than Issuer or any
person exercising demand registration rights in connection with such
registration) who or which is permitted to register their shares of Issuer
Common Stock in connection with such registration pro rata in the proportion
that the number of shares requested to be registered by each Selling Holder
bears to the total number of shares requested to be registered by all persons
then desiring to have Issuer Common Stock registered for sale (other than Issuer
or any person exercising demand registration rights in connection with such
registration).

                (c) Issuer shall use all reasonable efforts to cause the
registration statement referred to in subparagraph (a) above to become effective
and to obtain all consents or waivers of other parties which are required
therefor and to keep such registration statement effective, provided, that
Issuer may delay any registration of Option Shares required pursuant to
subparagraph (a) above for a period not exceeding 90 days, provided Issuer shall
in good faith determine that any such registration would adversely affect an
offering or contemplated offering of other securities by Issuer. Notwithstanding
anything to the contrary contained herein, Issuer shall not be required to
register Option Shares under the Securities Laws pursuant to subparagraph (a)
above:

                    (i)    prior to the occurrence of a Purchase Event and
        following the termination  of the Option;

                    (ii)   more than twice;

                    (iii)  within 90 days after the effective date of a
        registration referred to in subparagraph (b) above pursuant to which the
        Selling Holders concerned were afforded the opportunity to register such
        shares under the Securities Laws and such shares were registered as
        requested; and

                    (iv)   unless a request therefor is made to Issuer by
        Selling Holders holding at least 15% or more of the aggregate number of
        Option Shares then outstanding or the right to acquire at least 15% of
        the Option Shares.

                    In addition to the foregoing, Issuer shall not be required 
to maintain the effectiveness of any registration statement after the
expiration of 120 days from the effective date of such registration statement.
Issuer shall use all reasonable efforts to make any filings, and take all steps,
under all applicable state securities laws to the extent necessary to permit the
sale or other disposition of the Option Shares so registered in accordance with
the intended method of distribution for such shares, provided, that Issuer shall
not be required to consent to general jurisdiction or qualify to do business in
any state where it is not otherwise required to so consent to such jurisdiction
or to so qualify to do business.

                (d) Except where applicable state law prohibits such payments,
Issuer will pay all expenses (including without limitation registration fees,
qualification fees, blue sky fees and expenses (including the fees and expenses
of Issuer's counsel), accounting expenses, printing expenses, expenses of
underwriters, excluding discounts and commissions but including liability

                                      -11-
<PAGE>   12

insurance if Issuer so desires or the underwriters so require, and the
reasonable fees and expenses of any necessary special experts) in connection
with each registration pursuant to subparagraph (a) or (b) above (including the
related offerings and sales by Selling Holders) and all other qualifications,
notifications or exemptions pursuant to subparagraph (a) or (b) above.
Underwriting discounts and commissions relating to Option Shares and any other
expenses incurred by such Selling Holders in connection with any such
registration (including expenses of Selling Holders' counsel) shall be borne by
such Selling Holders.

                (e) In connection with any registration under subparagraph (a)
or (b) above Issuer hereby agrees to indemnify the Selling Holders, and each
underwriter thereof, including each person, if any, who controls such holder or
underwriter within the meaning of Section 15 of the Securities Act, against all
expenses, losses, claims, damages and liabilities caused by any untrue statement
of a material fact contained in any registration statement or prospectus
(including any amendments or supplements thereto) or any preliminary prospectus,
or caused by any omission to state therein a material fact required to be stated
therein or necessary to make the statements therein, in light of the
circumstances under which they were made, not misleading, except insofar as such
expenses, losses, claims, damages or liabilities of such indemnified party are
caused by any untrue statement or alleged untrue statement or any omission or
alleged omission made in reliance upon and in conformity with, information
furnished in writing to Issuer by such indemnified party expressly for use
therein, and Issuer and each officer, director and controlling person of Issuer
shall be indemnified by such Selling Holder, or by such underwriter, as the case
may be, for all such expenses, losses, claims, damages and liabilities caused by
any untrue, or alleged untrue, statement or omission made in reliance upon, and
in conformity with, information furnished in writing to Issuer by such holder or
such underwriter, as the case may be, expressly for such use.

                    Promptly upon receipt by a party indemnified under
this subparagraph (e) of notice of the commencement of any action against such
indemnified party in respect of which indemnity or reimbursement may be sought
against any indemnifying party under this subparagraph (e), such indemnified
party shall notify the indemnifying party in writing of the commencement of such
action, but the failure so to notify the indemnifying party shall not relieve it
of any liability which it may otherwise have to any indemnified party under this
subparagraph (e), except to the extent such failure to notify materially
prejudices the indemnifying party. In case notice of commencement of any such
action shall be given to the indemnifying party as above provided, the
indemnifying party shall be entitled to participate in and, to the extent it may
wish, jointly with any other indemnifying party similarly notified, to assume
the defense of such action at its own expense, with counsel chosen by it and
reasonably satisfactory to such indemnified party. The indemnified party shall
have the right to employ separate counsel in any such action and participate in
the defense thereof, but the fees and expenses of such counsel (other than
reasonable costs of investigation) shall be paid by the indemnified party unless
(i) the indemnifying party either agrees to pay the same, (ii) the indemnifying
party falls to assume the defense of such action with counsel satisfactory to
the indemnified party, or (iii) the indemnified party has been advised by
counsel that one or more legal defenses may be available to the indemnifying
party that may be contrary to the interest of the indemnified party, in which
case the indemnifying party shall be entitled to assume the defense of such
action notwithstanding its obligation to bear fees and expenses of such counsel;
provided, however, that the indemnifying party shall not be liable for 

                                      -12-

<PAGE>   13

the expenses of more than one firm of counsel for all indemnified parties in any
jurisdiction. No indemnifying party shall be liable for any settlement entered
into without its consent, which consent may not be unreasonably withheld.

                    If the indemnification provided for in this
subparagraph (e) is unavailable to a party otherwise entitled to be indemnified
in respect of any expenses, losses, claims, damages or liabilities referred to
herein, then the indemnifying party, in lieu of indemnifying such party
otherwise entitled to be indemnified, shall contribute to the amount paid or
payable by such party to be indemnified as a result of such expenses, losses,
claims, damages or liabilities in such proportion as is appropriate to reflect
the relative benefits received by Issuer, all Selling Holders and the
underwriters from the offering of the securities and also the relative fault of
Issuer, all Selling Holders and the underwriters in connection with the
statements or omissions which resulted in such expenses, losses, claims, damages
or liabilities, as well as any other relevant equitable considerations. The
amount paid or payable by a party as a result of the expenses, losses, claims,
damages and liabilities referred to above shall be deemed to include any legal
or other fees or expenses reasonably incurred by such party in connection with
investigating or defending any action or claim; provided, that in no case shall
any Selling Holder be responsible, in the aggregate, for any amount in excess of
the net offering proceeds attributable to its Option Shares included in the
offering. No person guilty of fraudulent misrepresentation (within the meaning
of Section 11(f) of the Securities Act) shall be entitled to contribution from
any person who was not guilty of such fraudulent misrepresentation. Any
obligation by any holder to indemnify shall be several and not joint with other
holders.

                    In connection with any registration pursuant to
subparagraph (a) or (b) above, Issuer and each Selling Holder (other than
Grantee) shall enter into an agreement containing the indemnification provisions
of this subparagraph (e).

                (f) Issuer shall use its best efforts to comply with all
reporting requirements and will do all such other things as may be necessary to
permit the expeditious sale at any time of any Option Shares by Holder in
accordance with and to the extent permitted by any rule or regulation
promulgated by the SEC from time to time, including, without limitation, Rules
144 and 144A.

                (g) Issuer will pay all stamp taxes in connection with the
issuance and the sale of the Option Shares and in connection with the exercise
of the Option, and will save Holder harmless, without limitation as to time,
against any and all liabilities, with respect to all such taxes.

        10.     QUOTATION; LISTING. If Issuer Common Stock or any other 
securities to be acquired upon exercise of the Option are then authorized for
quotation or trading or listing on the NYSE or any other securities exchange or
any automated quotations system maintained by a self- regulatory organization,
Issuer, upon the request of Holder, will promptly file an application, if
required, to authorize for quotation or trading or listing the shares of Issuer
Common Stock or other securities to be acquired upon exercise of the Option on
the NYSE or any other securities exchange or any automated quotations system
maintained by a self-regulatory organization and will use its best efforts to
obtain approval, if required, of such quotation or listing as soon as
practicable.

                                      -13-
<PAGE>   14

         11.    DIVISION OF OPTION. This Agreement (and the Option granted 
hereby) are exchangeable, without expense, at the option of Holder, upon
presentation and surrender of this Agreement at the principal office of Issuer
for other Agreements providing for Options of different denominations entitling
the holder thereof to purchase in the aggregate the same number of shares of
Issuer Common Stock purchasable hereunder. The terms "Agreement" and "Option" as
used herein include any other Agreements and related Options for which this
Agreement (and the Option granted hereby) may be exchanged. Upon receipt by
Issuer of evidence reasonably satisfactory to it of the loss, theft, destruction
or mutilation of this Agreement, and (in the case of loss, theft or destruction)
of reasonably satisfactory indemnification, and upon surrender and cancellation
of this Agreement, if mutilated, Issuer will execute and deliver a new Agreement
of like tenor and date. Any such new Agreement executed and delivered shall
constitute an additional contractual obligation on the part of Issuer, whether
or not the Agreement so lost, stolen, destroyed or mutilated shall at any time
be enforceable by anyone.

         12.    MISCELLANEOUS.

                (a) EXPENSES. Except as otherwise provided in Section 9, each of
the parties hereto shall bear and pay all costs and expenses incurred by it or
on its behalf in connection with the transactions contemplated hereunder,
including fees and expenses of its own financial consultants, investment
bankers, accountants and counsel.

                (b) WAIVER AND AMENDMENT. Any provision of this Agreement may be
waived at any time by the party that is entitled to the benefits of such
provision. This Agreement may not be modified, amended, altered or supplemented
except upon the execution and delivery of a written agreement executed by the
parties hereto.

                (c) ENTIRE AGREEMENT; NO THIRD-PARTY BENEFICIARY; SEVERABILITY.
This Agreement, together with the Merger Agreement and the other documents and
instruments referred to herein and therein, between Grantee and Issuer (a)
constitutes the entire agreement and supersedes all prior agreements and
understandings, both written and oral, between the parties with respect to the
subject matter hereof and (b) is not intended to confer upon any person other
than the parties hereto (other than any transferees of the Option Shares or any
permitted transferee of this Agreement pursuant to Section 12(h) and other than
as provided in the Merger Agreement) any rights or remedies hereunder. If any
term, provision, covenant or restriction of this Agreement is held by a court of
competent jurisdiction or a federal or state governmental or regulatory agency
or authority to be invalid, void or unenforceable, the remainder of the terms,
provisions, covenants and restrictions of this Agreement shall remain in full
force and effect and shall in no way be affected, impaired or invalidated. If
for any reason such court or regulatory agency determines that the Option does
not permit Holder to acquire, or does not require Issuer to repurchase, the full
number of shares of Issuer Common Stock as provided in Sections 3 and 8 (as
adjusted pursuant to Section 7), it is the express intention of Issuer to allow
Holder to acquire or to require Issuer to repurchase such lesser number of
shares as may be permissible without any amendment or modification hereof.


                                      -14-

<PAGE>   15

                (d) GOVERNING LAW. This Agreement shall be governed and
construed in accordance with the laws of the State of Tennessee without regard
to any applicable conflicts of law rules.

                (e) DESCRIPTIVE HEADINGS. The descriptive headings contained
herein are for convenience of reference only and shall not affect in any way the
meaning or interpretation of this Agreement.

                (f) NOTICES. All notices and other communications hereunder
shall be in writing and shall be deemed given if delivered personally,
telecopied (with confirmation) or mailed by registered or certified mail (return
receipt requested) to the parties at the addresses set forth in the Merger
Agreement(or at such other address for a party as shall be specified by like
notice).

                (g) COUNTERPARTS. This Agreement and any amendments hereto may
be executed in two counterparts, each of which shall be considered one and the
same agreement and shall become effective when both counterparts have been
signed, it being understood that both parties need not sign the same
counterpart.

                (h) ASSIGNMENT. Neither this Agreement nor any of the rights,
interests or obligations hereunder or under the Option shall be assigned by any
of the parties hereto (whether by operation of law or otherwise) without the
prior written consent of the other party, except that Grantee may assign this
Agreement to a wholly owned Subsidiary of Grantee and Grantee may assign its
rights hereunder in whole or in part after the occurrence of a Purchase Event.
Subject to the preceding sentence, this Agreement shall be binding upon, inure
to the benefit of and be enforceable by the parties and their respective
successors and assigns.

                (i) FURTHER ASSURANCES. In the event of any exercise of the
Option by Holder, Issuer and Holder shall execute and deliver all other
documents and instruments and take all other action that may be reasonably
necessary in order to consummate the transactions provided for by such exercise.

                (j) SPECIFIC PERFORMANCE. The parties hereto agree that this
Agreement may be enforced by either party through specific performance,
injunctive relief and other equitable relief. Both parties further agree to
waive any requirement for the securing or posting of any bond in connection with
the obtaining of any such equitable relief and that this provision is without
prejudice to any other rights that the parties hereto may have for any failure
to perform this Agreement.

                (k) CONFIDENTIALITY AGREEMENTS. The parties hereto agree that
this Agreement supersedes any provision of the Confidentiality Agreements that
could be interpreted to preclude the exercise of any rights or the fulfillment
of any obligations under this Agreement, and that none of the provisions
included in the Confidentiality Agreements will act to preclude Holder from
exercising the Option or exercising any other rights under this Agreement or act
to preclude Issuer from fulfilling any of its obligations under this Agreement.

                                      -15-

<PAGE>   16

        IN WITNESS WHEREOF, Issuer and Grantee have caused this Stock Option
Agreement to be signed by their respective officers thereunto duly authorized,
all as of the day and year first written above.

ATTEST:                                MAGNA GROUP, INC.


By: /s/ Carolyn B. Ryseff              By: /s/ G. Thomas Andes
   ---------------------------------      ------------------------------------
    Carolyn B. Ryseff                      G. Thomas Andes
    Secretary                              Chairman, President, and
                                              Chief Executive Officer

[CORPORATE SEAL]

ATTEST:                                UNION PLANTERS CORPORATION


By: /s/ E. James House, Jr.            By: /s/ Benjamin W. Rawlins, Jr.
   ---------------------------------      ------------------------------------
    E. James House, Jr.                   Benjamin W. Rawlins, Jr.
    Secretary                             Chairman and Chief Executive Officer

[CORPORATE SEAL]



                                     -16-


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