He's clearly athletic. I think he's just not functionally athletic if that makes sense... he doesn't have the coordination or mentality to unleash it during games. No killer instinct. Isn't comfortable in traffic, doesn't really absorb contact well.
His ceiling is a floor general that makes everyone better and hits open shots when he can, but that seems less and less likely. The hardest thing to change is a player's mentality, and he doesn't have it right now. He doesn't have the instincts on either end of the floor. He's athletic enough to stay in front of guys but doesn't anticipate well on D, and he thinks so much on offense the whole team can't function sometimes. It's possible he can reach that ceiling, but this disjointed crazy year has probably effected him as much as anyone.
I'd be happy if he can just become a positive piece of a great team off the bench--right now he isn't. If he can figure out how to get us into our sets, move the ball more quickly, be an average defender, and be a LITTLE bit of a threat to score the ball, then hit FTs in crunch time that would be enough.
He isn't going to be a 15+ point scorer or shoot 42% from deep, or average 2 steals a game. But if he gets his head right, he can be an important, consistent piece of a really good team.