In a shocking development, ESPN.com has learned that Oakland Raiders owner Al Davis has asked head coach Lane Kiffin to resign.

Oakland Raiders owner Al Davis has been pushing for coach Lane Kiffin to resign and is considering Dennis Green as a potential replacement, sources close to Kiffin and the team said.

Davis has gone so far as to draft a letter of resignation for Kiffin to sign, a source said. Kiffin has refused to do so but has dared Davis to fire him instead. The letter, the source said, was sent to Kiffin two weeks ago.

In the letter sent to Kiffin’s legal representatives, Davis stated that only he would have control over his staff and full personnel decisions, sources said. According to a source close to Kiffin, Davis had promised Kiffin when he hired him that he would have more control over staff and personnel matters than recent Raiders coaches. Kiffin was allowed five offensive assistants and to name his own staff when he took the job after the 2006 season.

Davis has officially lost it. He went against conventional wisdom by hiring Kiffin last year and now after only one season he’s demanding for him to resign? And he possibly wants to hire Denny Green? Other one fabulous post-game rant, what did Green do in Arizona that would compel Davis to want to make him the Raiders next had coach?

Just lose your mind, baby.