CONSENT OF DIRECTOR NOMINEE I hereby consent to the use in the "Summary-Management and Operations after the Merger" and "The Merger-Management and Operations after the Merger" sections of the Prospectus constituting part of the Registration Statement on Form S-4 of SIS Bancorp, Inc. of my name as a nominee to be a director of SIS Bancorp, Inc. after the completion of the merger. /s/Ronald E. Bourbeau - --------------------- Ronald E. Bourbeau October 24, 1997