Be careful when passing judgment. He definitely made a ton of mistakes. Seems like he's genuinely trying to own up to them.
Remember, he's only 24 years old. I didn't get a smidge of common sense until I hit 28. I was broke and messed up. Who knows what I would have done with millions.
That said, he's still trying to learn what it means to be a man. For that matter, he's been teaching himself up to this point. He screwed up. Maybe he actually means it when he says he knows he messed up. His future choices will help dictate if he has or not. Until then, give him a chance. God knows I got a few.
That said, make the trade and let's dominate next year. You'll love the move as long as we have a championship next year.