You mean prime or current? He was close to falling apart the last couple playoffs with the Spurs.

It was a good thing for him and us.
I don't mean that the Spurs should want current Green back, even though he's still a fine role-player who may well get a third ring in as many years away from Pop. I mean that the transition defense is so much worse than it used to be. Even Spurs Simmons would be a big improvement