McCann joined Shamrock Rovers in 1954 and made his debut on 10 April in a 2–0 win against Bohemians at Dalymount Park having signed the previous week.
In total he made two appearances for Rovers in Europe and scored 46 League and 7 FAI Cup goals during his time at Glenmalure Park.
[citation needed] He won his one and only senior cap for the Republic of Ireland national football team on 25 November 1956, scoring the third goal in a 3–0 win over world champions Germany at Dalymount Park.
[6][7] He won two Republic of Ireland B national football team caps in 1958 scoring the winner in Iceland on his debut.
[11] In February 2008, McCann, and Liam Hennessy were invited to the Munich commemoration at Manchester United.