Marcus Haber, a Canadian-born striker, signed on loan from West Bromwich Albion in February 2010 and played just five times for the Grecians. He then went on to play for various clubs in England and Scotland before returning to Canada and later playing in Cambodia. Marcus also won 27 caps for Canada. 

Marcus had been with Vancouver Whitecaps, and had spent time with FC Groningen in the Netherlands, when he joined West Bromwich Albion for an undisclosed fee in January 2010. At this time he had already made his full international debut for Canada having previously represented the country at all levels between under-15 and under-23.

Albion almost immediately lent Marcus to Exeter City for whom he made his Football League debut on 20 February 2010 against Stockport County. He was to play four more times during the next month without scoring. Of his five games for the Grecians, Marcus started three and came on twice as a substitute. 

Marcus then returned to Vancouver Whitecaps on loan and was also farmed-out to St Johnstone where his involvement came to an abrupt end in November 2010 when sustaining an anterior cruciate ligament injury. Released by West Brom in June 2011 without having played for the first-team, Marcus agreed terms to return to St Johnstone where he had one season before moving to Stevenage. Then, after two seasons in Hertfordshire, Marcus played the most football of his career making around eighty appearances - sixteen goals - in a two-year stay at Crewe Alexandra. Next Marcus moved to Dundee in 2016 and Falkirk (on loan) in 2018 before returning to Canada to sign for the newly-formed Pacific FC in January, 2019. 

His next move was in June 2020 to Calgary-based Cavalry - managed by Tommy Wheeldon Jnr (son of former Exeter City coach Tommy Snr) and ex-Torquay and Taunton midfielder Leon Hapgood - prior to trying his luck in Cambodia initially with Visakha and then Preah Khan Reach Svay Rieng in the 2022 and 2023 seasons.