Gardner began his professional career with Harbour View F.C., where he debuted as a starter at only 14 years old. He also, representing Wolmer's Boys' High School, dominated the local high school football leagues and has gained legendary status. Gardner is today recognised as one of the greatest high school football players ever in Jamaica.

His good performances for Jamaica attracted Bolton, then playing in the Football League Championship to offer Harbour View £1 million for his services.