The rights of a capital stock Connecticut bank to issue or grant rights or options entitling the holders thereof to purchase authorized shares from such bank shall be determined in accordance with section 33-675, provided no such rights or options shall be issued or granted to directors, officers or employees of the bank, or of a subsidiary thereof, unless such issue or grant is approved by shareholders of the bank within twelve months before or after the date such issuance or grant is made, or is authorized by and consistent with a plan approved by shareholders of the bank within twelve months before or after the date such plan is adopted, which plan shall be set forth or incorporated by reference in the instrument or instruments evidencing such rights or options.