Ralph's "advisors" try to keep a pulse on the fan base to make sure they will be able to sell tickets. These guys understand how upset Bills fans are and they won't risk keeping Chan here next season to watch all the home games play in front of a half empty stadium.
Mark my words, this organization will do everything it can to land Bill Cowher again. This time is different. Bill's wife has passed away to cancer (God Bless her soul) , and his children are grown up. His reasons to stay in North Carolina aren't there anymore. This roster is also much more talented than it was the previous time when Bill ultimately decided to stay home. The pieces for a winning team are in place and Bill would have the chance to put his mark on the team by drafting a franchise QB.
Brush this off as "fantasy" if you want but this is a very real possibility.