 On December 6, 2008 it was announced that Cosh would return to Kansas State for a second time under coach Snyder (when Snyder decided to come out of retirement to help the Wildcats) as assistant head coach (to Snyder) and co-defensive coordinator alongside Vic Koenning.Cosh will have now served as a defensive coordinator in five of the six BCS conferences (Big Ten, SEC, ACC, Big 12, and Big East).On January 18, 2012, Cosh was announced as the new defensive coordinator at the University of South Florida.