I dont know why everyone is making such a huge deal out of this. According to reports, this was already pre determined due to the new CBA since he can get more money either with the Knicks or another team if he opts out. Why handcuff yourself if you're Carmelo and take less money when you can opt out and get more with the same team?
I dont think theres a chance he's leaving NY. He would get obliterated in the media and his image would suffer big time.