It's a total no-brainer that you have to take an AA and NPOY candidate if he's interested in transferring in but, in all fairness, there was quite a bit of angst on the UK boards back when they were trying to figure out how Kofi and Oscar could be on the floor at the same time. There is also a rumor floating around that Oscar specifically voiced opposition toward the possibility of adding Kofi to the roster. No idea if that's true, but it adds some credence to the idea that bringing Kofi in could have led to some serious chemistry issues.
Personally, I don't particularly care why or how it happened. If Kofi comes back to play another year at Illinois, I'm not looking that gift horse in the mouth. I'll be too busy planning my Final Four watch party.