Sam made his debut for Forest in the 2008-9 season in an FA Trophy defeat to AFC Sudbury. He went on to make three more appearances – two from the bench before departing the club.
He returned early in the 2009-10 season, but was largely used as a substitute and only tended to start in cup matches.
He only scored once for Forest, in a 2-1 Isthmian League Cup victory over Ware in November 2009.
He left the club for Leyton, scoring on his debut.