Chill is being brought in to be more of a "life coach" for the team ... not to be confused with a basketball coach. Specifically, I think we can expect that he will spend a lot of time with JT, as well as the others. There is the potential that he could make a big difference with JT by improving his understanding of the game, both on and off the court.
I was under the impression that JTT had made a lot of progress. And this is the first I've heard any hint of off-court difficulties. Any elaboration you can offer?