A £250,000 capture from Brentford, Marcus became a fixture in the Dons line up between 1994-2001, during which time he played in the 1998 World Cup with Jamaica and scored a memorable header in an FA Cup victory over Manchester United.Converted to a defender in the twilight of his career, which has taken him to Glasgow Rangers, Watford, Brentford again and then Aldershot. Marcus signed for AFC Wimbledon in May 2007.