Hmm, I think I'd be fine with trading Green for a young player, an expiring, and a middling 1st round pick. Maybe I'd do a trade with Charlotte for Biyombo and their future first?
Biyombo is no world beater but he's young, a shot blocker, and plus, that future first might end up being a serviceable player as well (even if the Hornets make the playoffs). I like Green but he is not helping this team in the near future, nor is he a building block.