Bobby Petrino is a contract dishonoring snake as a head coach. He's been something of a fraud who stays one step ahead of being exposed. In recent history, the last 5 years in a row, he's either interviewed for or taken a job, while under long term contract. Starting in '03, he went behind Tommy Tuberville's back, the man who gave him a job, and interviewed for the Auburn job, while still at Louisville. 1 year later he interviewed at Notre Dame, Florida and Ole Miss, signs an extension long term and then interviews at LSU. In '05, says he has no interest in the NFL and then interviews with the Oakland Raiders. The least he could've done was stay the full season with the Falcons.
He's a pretty good Offensive Coordinator on the college level. I'm not sure he's a dynamic Head Coach like Arkansas thinks he is and that's what they'll need in the SEC, a dynamic boost.