League sources have confirmed that the Warriors have traded reserve forward David Lee to the Boston Celtics for Gerald Wallace.Lee, a two-time All-Star, played five seasons with the Warriors after beginning his career with five seasons in New York.According to basketball-reference, Wallace has one year left on a deal that will play him $10.105 million next season.In his career, the 6-7 Wallace has averaged 11.9 points, 5.8 rebounds and 2.1 assists.