UK is in the running for Langford, but not the favorite by any means. Lots of people think Duke is the leader, but if you talk to anybody in town they'll tell you that he is 100% UL bound. I strongly disagree with that sentiment as well.
I think that Duke, UK, and UL will be his final 3. Possibly IU, but I can't see him going there.
Returning rosters will play a big part in his recruitment. From what I can tell, he wants to go to whichever place gives him the best opportunity to shine for a year before the NBA.
I am not counting UK out due to that perspective. If UK has a mass exodus of guards while Duke and UL return a couple starting guards, I think Calipari can convince him to spend a year in Lexington.
Calipari and his assistants are spending LOTS of time here in New Albany. If he were 100% to Duke or UL, I don't think he would continue putting the full court press on him to this extent.
He is one hell of a player. The best I have ever seen come out of this area in my 33 year lifetime.