Carey is an athletic big with bounce and very little basketball skills. I believe his max would be a 4 year guy who defends well at the rim, rebounds and offensively attacks the rim aggressively by trying to dunk every time he gets the ball (Frank Anslem).
Coaches, fans, scouts all get excited about athletic bigs and their "potential" and look pass essentials like skills, awareness/understanding of the game, and certain things that are instinctive and can't be taught. The little I've seen of Carey, he doesn't look like a basketball player to get excited about but someone who can contribute in a limited way by using his athleticism wisely.