According to an article on Yahoo by Dan Wetzel, Brandon Jennings may decide to play professionally in Europe rather than professionally at Arizona next year. OK, I don't know how to link to Wetzel's article, so shoot me.
I think that's a good idea for guys like Jennings or OJ2 -- guys who are just filling space at a college and taking a scholarship that could be given to an actual student athlete. Sure, we have our own one-an-dones, but if Jennings sets a precedent here, it could end that fiction. Get rid of the artificial barrier to entry into the NBA. Let anyone in who can qualify. But make it clear that you get one decision only - if you elect to go professional, you don't get to play college ball. And if you play college ball, then you're ineligible for the NBA until your class graduates.