He simply is not a guy you want to build around. For whatever reason, his weight or conditioning perhaps hidden injury he has broke down at the end of the his season. He did last for almost the whole season, something he never did prior to this season as he missed about 30% of games of his previous seasons. Might as well be missing now, with the way he is playing.
Could he turn it around, possibly, but not likely. Thus far, his commitment to change has been poor, given it is a contract year too, how could Ainge trust him?
I have always thought his ceiling is low, and he came into the league the player we would get. He was already skilled but had low potential for growth with limited athletic ability. I did not foresee that he would completely sabotage himself with blatant disregard for conditioning, fitness and diet. He can play in the NBA, he does not fit well with what we are doing here. That being said for the last few years he was the best rebounder we had but he always had his faults. I think him playing was out of necessity and less out of ability.
We could use another couple of bigs, and I hope Ainge gets some.