They won't trade him unless they want to take back Westbrook. I can't think of any other team that is going to be in position to trade for him.
The Nets will just wait him out. Then in the off season, when he realizes no one has any money to sign him (at least anyone he would want to play for), he will probably sign again with the Nets.
It is kind of silly. As soon as Durant is back, they are a contender again. Unless he goes to Denver or something, he is not going to have a better chance at winning.