New Chicago Bears head coach Marc Trestman has had success on every level, but his two Grey Cups in five seasons with the Montreal Alouettes have been his most public success. A “quarterback guru” who helped Bernie Kosar succeed in college and the pros, and worked with Tim Tebow in the run-up to the 2010 NFL Draft, Trestman should look to these coaches (and one executive) who successfully ran clubs in the United States and Canada.Marv Levy - Trestman’s CFL career perhaps mirrors former Buffalo Bills coach Marv Levy’s the most. Like Trestman, Levy coached the Montreal Alouettes to two Grey Cup wins in five seasons before heading to the NFL. However, Levy’s success in America did not happen overnight; Marv only had one winning season with the Kansas City Chiefs from 1978 to 1982. After one season with the USFL’s Chicago Blitz in 1984, Levy rebuilt the Buffalo Bills around fellow USFL-er Jim Kelly. Levy and Kelly both led one of the most consistently successful teams in NFL history, if one that always fell short of the main prize.