 In 1990, he was originally transferred to Edmonton, but shortly after was traded to Kitchener Spirit.In 1991, he returned to play with the Toronto Blizzard.McCallum made his debut for the Canadian national soccer team on December 6, 1983 against Mexico in a friendly match.In total he played 18 international matches for the national team between 1983 and 1988.His nephew Gavin McCallum is also a footballer who played for the Canadian national soccer team.