I'm not saying that the Nuggets are going to snag him for Beasley, Chandler and a first.
It is pretty obvious that Green is a distraction and a bit of a problem for the Warriors. As long as they are winning they'll put up with it, but if they lose again this year and his antics have any role in that, I think it is a fair to good possibility they'll listen to offers.
On top of that, Curry (who I bet takes a 2+1 contract so he can get a fat raise in two years) and Durant are both free agents who should get a combined $62 million or something. Their core 4 guys are going to cost nearly $100 million next season and their salaries are going to rise much faster than the cap, and beyond that they don't have a lot of depth under contract (McCaw, Jones, Looney). I'm sure they'll be able to re-sign a couple of the vets on "bargain" deals but they are all getting pretty old and will have a limited shelf life.
If they are tired of Green and want to infuse some younger talent into the team, I think looking to trade him to somebody like Denver or Boston is a very real possibility this offseason.