Chief executive Scott Duxbury and technical director Gianluca Nani made the gesture after the deal appeared close to collapsing last week.
Despite Franco, 32, having been signed on a free transfer, the move hit a sticking point over a number of payments to both the player and agent. Duxbury and Nani agreed to take a hit on their annual salary to ensure the player would join.
Despite having since been taken over by CB Holdings, funds remain tight for Zola.