I don't think there is a chance in he!! that this would happen. Any coach who has 1 or 2 bad seasons as a head coach in the NFL, and his head is on the chopping block. I think he is content right where he is and doesn't want to have to deal with that. He is doing a great job bringing us back to the top.
I dont think he would want to go back to the NFL. Last time he was there he got fired after a rash of injuries trashed the season. Even though he made it to the super bowl the year before.
My name is Bo Pelini and I heard there is a head coaching job open somewhere. I don't care where it is or what level, just put my name in there.I want to be a head coach! :asshat
I think after about 10 years, Callahan is going to go back to the NFL. I think he enjoys the NFL more and he is using NU as a team to show that he can coach.