That seems to be a hot topic these days. The NCAA is the defacto minor league, and the popularity of the sport, and the amount of money it generates is heavily tied into the reason why we don't see a proper minor league. Some have suggested seperating the universities from the football programs in all but name(think licensing), which at first sounds appalling(especially in a place like Columbus), but when broken down, makes a lot of sense. Players would have the option of attending school, as opposed to being forced, they would be paid, the draconian and non-sensical rules of the astonishingly confusing NCAA rule book would no longer apply. It makes a lot of sense, so you can bet it won't happen.