On January 19, 2022, it was announced that Harrison had joined the Toronto Argonauts as the team's running backs and quality control coach.[1] He won the 109th Grey Cup in his first year with the team and was with the Argonauts for two years.
Harrison is the grandson of former Outland Trophy winner and CFL offensive lineman Cal Jones, who was one of five players from the 1956 East-West All-Star Game killed when their Vancouver to Calgary plane, Trans-Canada Air Lines Flight 810, crashed into Slesse Mountain, killing all 62 people aboard. Harrison's search to learn more about the life and death of his grandfather and his family history is at the centre of the 2012 documentary The Crash of Flight 810, part of TSN's Engraved on a Nation series of eight documentaries celebrating the 100th Grey Cup.[3][4]