he's not a pure post man but if allowed to gain position has good moves. i haven't seen him with the ball facing the basket from 15-18',You are probably right this year, but he appears to be pretty smooth and has great touch around the rim. He also seems to be a plus rim protector. After (if) he can put on some mass, he is definitely going to be trouble.
but if he has those skills he can play with another center and be a problem.