It was the money. He wanted more after the champion ring, and his wife made it public on TV in LA, saying Glen wont play if the salary dont increase significantly. Then this was the end of his career as a Laker, got shipped out to Knicks. The Laker team dont need anybody as long as there are Kobe and Shaq. Glen was red hot tough when played in LA. He's old now. He had knee problem as well, he is on the way down at a pretty fast speed in my opinion.