Playing time in college > practice time in the NBA. It's not highly unlikely he won't get much time in the NBA. He's not a very good offensive player right now and he would benefit from playing another year in college. I don't think he will stay, but it would be better for him. Yes, something bad could happen to him, and people always throw this out there, but it's highly unlikely. This isn't football. the best thing that could happen if he stays in college is he might be a little better prepared mentally and physically to help his NBA team when he finally gets there. and this is debatable. if he decides to do that, then thats great, he can pat himself on the back and feel good about his sacrifice, but he wont get drafted any higher or make any more money. the bad things that could happen are catastrophe- ACL type injuries, or having a so-so year and falling down in the draft.