To put it simply, I'm not a fan.
I've seen him play about 10 times going back to his freshman year (including tonight)..... There's no denying he is a physical specimen, though I wouldn't be surprised if he measures out surprisingly short (height/length) at the combine. I think he uses his athleticism too much against smaller defenders and will have a hard time translating his skills to the next level because he won't have the strength advantage anymore. He's not a particularly good shooter, not a good passer, not a good ball handler, and for such a strong guy, he isn't a great man defender.
I have him 12th overall and the 4th or 5th best PF