What makes a great college player doesn't always translate to the next level. Harrison has great vision, a very high basketball IQ, he is a very good shooter, he can score in a variety of ways, and he has skill to spare. Like Reynolds, Hatten, McNamara and countless others, he'll have no problem scoring at the Big East level.
At the next level, he'll have his shot thrown back at him every time he gets in the lane--if he gets there. He'll be guarded by taller defenders with much better lateral quickness than he possesses. I love the kid, but he looks like he is wearing ankle weights. He is not tall, has below average length, and he has a low release to top it off. He doesn't have a true position yet. If he can show that he can run point for a few years, that will help his stock signifigantly. All this talk about Harrison leaving early is a joke at this point.
Look at the kids in this year's draft. Ryan Harrow and Myck Kabango make Harrison look like he's standing still. Ben McLemore's ceiling is several stories higher than Harrison's. Not sure if he'll depart, but BJ Young looks like a stud with better height and athleticism.
What about all the seniors that have to come out? Dexter Strickland, Drew Crawford, Green from Va Tech, Kenny Boynton, Durand Scott, Pierre Jackson, and Canaan from Murray State (who shoots 10% better than Harrison from deep).
The NBA will take shot on "high ceiling" kids like McLemore or Lorenzo Brown in the lottery over a more skilled player like Harrison any day of the week. Harrison isn't even on the NBA radar the next two years. He might be a guy that gets drafted in the second round as a senior and sticks around the league for a while due to his IQ and skillset.