Jon Gruden coached the Buccaneers to their only championship. Could they bring him back to try to win another? They might, as talk is heating up in Tampa that head coach Dirk Koetter is on the hot seat and Gruden could be his replacement. Longtime Tampa reporter Ira Kaufman said today on PFT Live that he thinks Koetter needs to close strong if he’s going to save his job, and that the Buccaneers’ owners may think Gruden would energize the fan base. “I think Koetter’s got seven weeks to prove that this team is still buying what he’s selling,” Kaufman said. “The stands are half empty, and there’s a guy out there that has a lot of juice and can fill those stands. . . . I’m starting to believe it for the first time, that Gruden’s coming back.”