After having a good visit Wednesday with Raiders boss Al Davis, Steelers offensive coordinator Ken Whisenhunt informed the Raiders that he would stay with the Steelers. Whisenhunt left Oakland Wednesday night on a red-eye flight without an offer. He was told by Davis that the team would get back to him in a couple of days. Conversations with the team and Whisenhunt continued Thursday morning until Whisenhunt decided that staying with the Steelers was his best move. While talking to Whisenhunt, the Raiders apparently made an offer to Louisville coach Bobby Petrino, who turned them down Wednesday night, ESPN's Chris Mortensen reported. It was the third overture to Petrino, who said he was flattered but wanted to remain in Louisville. With Whisenhunt out of the picture, the Raiders could move quickly to return former Raiders coach Art Shell to head coaching duties. Shell interviewed Feb. 2 and told Davis he's ready to serve when necessary. Shell is in the Tampa area for the next couple of days, but he told Davis he's ready to accept the job if offered. Whisenhunt's agent, Eric Metz, stayed over in Oakland on Thursday night, but he left town Thursday without any deal being offered and knowing Whisenhunt's decision.