The Arkansas AD has publicly made it known that he's interested in Bo and feels that Bo would be a good fit for the soon-to-be vacant job. Rumors about Bo pop up for every job opening, but this one's a little different since they have come out and said they'll be pursuing him. Hope he stays, and I think he will, but I could see Arkansas being one of the few schools Bo would leave Nebraska for.
Link: http://sports.omaha.com/2012/11/13/arkansas-looking-at-bo/