Just a clarification
Will McDowell White isnt eligible for the 2016 draft because he's too young, not to mention he wouldnt get drafted even if he was old enough. One of the main reason's Exum got drafted so high was besides his elite physical measurements, he was showcased in several international tournaments, something White won't get since he wasnt even a starter for the u19 team. Might not get invited to the Hoop summit either.
If Isaac Humphries for instance goes ahead with reclassifying to the 2015 class and plays NCAA ball with Kentucky the coming season still can't declare till after his sophmore season because he's too young, and White is a few months younger then him I think.
While I think if he works hard the kid could potentially make the NBA, its still a long road to go before it could happen. I think he's stated he wants to go the College route, so hopefully he picks a high profile school that can teach him properly.