Career
Marko Muslin started his career at Stade Brest. He later signed with Office of Government Commerce Nice in 2001. In 2005, he was loaned out to Dutch side Willem World War II After playing with Lierse South.K. in the Belgian Pro League, in February 2008 Muslin signed on free transfer with Bulgarian club Lokomotiv Sofia.
He left the club after 1 year and joined Football Club Wil 1900.
In the summer of 2011 he moved to Football Club Lausanne-Sport, however his stay was short as he returned to Wil the following season. In July 2015, Muslin signed a two-year contract with Football Club Wohlen.
His father Slavoljub is a Serbian football manager and a former player.