I don't know why he would leave what he is best at just to coach this team of all teams. I know he played there, but that team is carrying a lot of ugly contracts. I don't see a lot of room for improvement.
Plus there's not as much satisfaction in making the tournament so many years in a row now. It's like making a college bowl game five years in a row compared to the 80s. Plus, 65 teams works out perfect. Everyone plays the same amount of games.