I agree that he may not tall enough to play center in the NBA, but he will he will become a great NBA power forward, if he is too small to play center. But then you don't play defense with jumping ability but with foot movement (positioning) and strength, both of which he excels at. As far as is offense goes, even today he could pin down most of the NBA centers in the lower box on offense because of his strength and knowledge of how the game is played.
zero athleticism?
Like you said, athleticism is a heck of a lot more than being able to run like a cheetah and jump like a kangaroo.
All of his skill translate 100% to the NBA game.
1. Strong
2. Smart
3. Excellent shooter inside and out
4. Excellent offensive moves
5. Tough, tough rebounder
6. Great passer, probably the best big man passer today in college or the NBA.
7. Total team player
8. Totally self-motivated, according to his father who played in the NBA and should know
College Basketball Power Rankings 