Colson is a great college player, and his unconventional "shape" allows him to play three to four inches "taller" than he is. But it's difficult to see how that translates to the NBA with all its 6'8"/6"9/6'10" skywalkers blocking shots. Secondly, the NBA requires almost all its people to run and, if in position, to shoot the threes. Plus, it's hard to see him being slotted into a near-the-basket position offensively, and more important defensively --- raw height-without-yet-jumping still counts there. CAN he be a wing?
Colson's such a winner-warrior that he'd be good to have on your bench, but if you're an NBA coach do you want to spend a high draft pick (without him proving more to you in, say, another year of college)? If anyone here knows what his family's economic situation is, that might be a factor.
His senior year should be a lot of fun, and something that he'll never get a second crack at. That and graduating might be valued over other factors unless his family needs the money now. I'd stay, but no one asked me during my intramural days with the Chem Club team.