He began his senior Greenock Morton career in 2003 when he was signed by John McCormack from Hillwood Boys Club. McGurn had previously played in the youth teams at Queen's Park, under John McCormack.
In 2003, McGurn began his senior career with Greenock Morton after being signed by John McCormack from Hillwood Boys Club.  He had previously played for Queen's Park's youth team under the same manager.