You either trade him or try to buy him out. He's owed 23 million next season, and honestly its a much higher probability that they buy him out than trade him.
2 ways it works out in a trade:
1) THey trade him to a team looking to cut salary. In that case they take on boucoup salary in years past 2010, but probably get a couple viable players and one sub star (think Baron Davis)
2) They trade him without taking on Salary down the road, so they get other high risk talent in return.
If they buy him out maybe they shed salary and even save a few million bucks in the process.
Personally I think that he'd look great in green