Gruden -- the younger brother of Jon Gruden -- just concluded his second season as offensive coordinator of the Cincinnati Bengals. The 45-year-old Gruden has helped to develop quarterback Andy Dalton, who has progressed in each of his seasons in the league. Gruden has no NFL head-coaching experience, but spent nine seasons as head coach of the Orlando Predators in the Arena Football League. He was also a head coach during a brief United Football League stint in 2010.