He should be a good energy big right away, who rebounds runs hard in transition, is a pretty good roll man. Watch his highlights - he shows very good body control and pace in traffic; quick to dunk, knows where the other players are, doesn't mind contact at all.
So hard to guess his ceiling without seeing him play in the league. Maybe a taller, fitter Jared Sullinger with a better shot who doesn't get his own shot blocked as frequently?