In the short term, I see Green as a potential Sixth Man of the year next season.
2009-2010 salaries for the top guys in voting for the award last season:
Jamal Crawford $10,800,000
Jason Terry $10,650,000
Anderson Varajao $7,281,818
Mano Ginobili $11,854,584
JR Smith $6,757,851
Lamar Odom $8,200,000
Paul Milsap $7,600,000
Carl Landry $3,000,000
Udonis Haslem $3,500,000
Marcus Thornton $762,195
I would say that, considering his youth and upside, Green is probably worth somewhere in the $7-10 million range, but I can definitely see a team being willing to give him Ben Gordon-ish money, especially if Green has a strong playoff performance.