Marc Crosas made his way through the youth teams at FC Barcelona before making his debut for the first team in the 2006/07 season whilst still a Barça B player. The blaugrana coach at the time Frank Rijkaard gave him a chance in a Copa del Rey game against Badalona and the midfielder would go on to make four appearances, one of which came in the Champions League against Stuttgart. 

In the summer of 2008 he moved to Olympique Lyonnais and claimed a league title with the French club. At the end of the 2008/09 season he made his way to Scotland to sign for Celtic FC where he stayed for three seasons. 

A spell in Russia with Volga followed before he made the move to Mexico where he spent six seasons playing for Santos Laguna, Leones Negros, Tampico Madero and Cruz Azul with a short period back in Spain with Tenerife also included. In 2017 he decided to hang up his boots at the age of 29.