On Sunday, Colorado fired second-year head coach Jon Embree, a decorated former player in the program. Names mentioned for the job include Air Force's Troy Calhoun, Mark Mangino, Jeff Tedford, and Bobby Petrino.
McCall would be a great fit for the Colorado job. He graduated from Southern Colorado University, coached at the high-school level for 10 seasons with Douglas County and J.K. Mullen high schools in Colorado, and maintains strong recruiting ties in the state.
McCall came to Northwestern in 2008 after a one-year stint at Bowling Green's offensive coordinator. With NU, McCall served as the architect of an offense around five different starting quarterbacks in five seasons.
Colorado finished its season with a 1-11 record, losing every home game at Folsom Field. Northwestern capped off a 9-3 regular season by beating rival Illinois, and is preparing for a New Year's Day bowl appearance.