i have seen glimpses of improvement throughout his play this season. His 3 point shot, shot selection, his passing, use of the bank shot in good situations. He HAS improved over last year(mostly offensively). Problems come everywhere like new coach, scared to be benched because of poor D (leads to nervous offense), no plays called for him, half court sets, list goes on.
I think he will snap out of it once he gets comfortable with the coach and his lesser role. Look at James Johnson, he is putting it all together and playing within himself.