If the Cs sign a max level FA it won't be as important to sign Green. First of all, a max level FA would take up 30+ minutes and therefore other people's roles would be adjusted, meaning that there would be fewer overall minutes available. Add in the fact that Brown would have a year under his belt and likely would fill a similar role, Yabu and Zizic would be rotation players and the new #1 pick would also contribute.
I like Gerald and was happy for signing him this year. Even when he was riding the bench I didn't think having him available was a wasted effort. But if someone else wants to pay him bigger dollars next year, good for him but I don't see the same need to keep him on the roster.