Seth Davis did a piece profiling pro prospects by talking to scouts.  Here's the blurb on JWill:

"Jordan Williams, 6-10 sophomore forward, Maryland

He gets a double-double every night. He's a rebounder, he's tough, he can score it. If he could make a free throw he'd be putting up bigger numbers and getting more notice. The question with him is the athleticism -- he's a below-the-rim finisher. You wonder if there's a chance of development where he could step out and make a jumper. His free-throw shooting makes you wonder, but there's a place in our league for that kind of guy"

Full article here: http://sportsillustrated.cnn.com/2011/writers/seth_davis/02/14/nba.scouting.finch/index.html?eref=sihp