FILE - In this Dec. 13, 2019, file photo, former NFL wide receiver Ed McCaffrey speaks during a news conference after being introduced as the new University of Northern Colorado head football coach in Greeley, Colo. McCaffrey will lead the Bears on to the gridiron to face Colorado in Boulder, Colo., for the two teams' season-opening tilt on Friday, Sept. 3. (Alex McIntyre/The Greeley Tribune via AP, File)

FILE - In this Friday, Aug. 13, 2021, file photo, Colorado head coach Karl Dorrell looks on as players take part in drills during an NCAA college football practice in Boulder, Colo. Dorrell will lead the Golden Buffaloes on to the gridiron Friday, Sept. 3, against Northern Colorado in the two teams' opening game of the season. (AP Photo/David Zalubowski, File)