Its official Rich Bisaccia has left Auburn to take the same position with the Dallas Cowboys. Head Coach Gus Malzahn wasted no time in replacing Bisaccia withTight Ends Coach Tim Horton. As a running backs coach at Arkansas from 2007-10, Horton coached four 1,000-yard rushers including All Americans Darren McFadden and Felix Jones.Coach Malzahn named Continue Story…