The whole thing with Gerald is that he is a talented player, with a great contract, in a position where we are somewhat solid even without him, and he has some injury concerns. Add that all up and you have a great trade candidate. He is probably would yield the highest return of players we would actually trade.
HOWEVER, considering the positives already mentioned community work, attitude, etc. etc. I wouldn't WANT to trade him unless it was just that good of a deal for us.