A problem with Noah is... he's unhappy coming off the bench. He'd come off the bench for the Celtics (he's not better than any of the top 3 bigs we currently have), he's having a miserable season as it is.
Though playing less lately, in part because of injuries, he's played 20 minutes a game for the Bulls. Doubtful he plays that much with us as it is.
So I don't envision him being happy and instilling his leadership qualities to this team.