Mike Tomlin will return as head coach of the Pittsburgh Steelers, despite going one-and-done in the playoffs for the fourth time in five years. That hasn't stopped at least two other NFL teams from exploring a trade for the former Super Bowl champion,

The Bears recently called the Steelers to see if they would be allowed to talk to and potentially try to trade for longtime head coach Mike Tomlin, only to have Pittsburgh rebuff their inquiry, league sources told ESPN. https://t.co/MviaUsBrjG

Tomlin is the longest-tenured head coach in the NFL having been hired by the team in 2007 to replace Bill Cowher. He has compiled a 183-107-2 record since and has never had a losing season in his career. The issue? For many Steelers fans?