Career
Club career
Yelen played for various clubs in Berlin, most recently for Tennis Borussia Berlin in the Junior League East, where he was discovered by the former Hansa Rostock coach Frank Pagelsdorf. He then got Timo Lange, the coach of the league, to transfer him to Football Club Hansa. In the 2005-2006 season, his first season in the adult area, Yelen scored 14 goals in 30 games for the second string Rostock team in the league.
Foreign the 2006-2007 season, he advanced to the second division team where he was a regular player and his playmaking skills developed.
He scored five goals in 26 starts and was promoted at the end of the season with Hansa Rostock to the Bundesliga. In the following 2007-2008 Bundesliga season, Yelen completed 20 games for the Baltic city dwellers, but was immediately relegated to the second Bundesliga, whereupon Yelen initially sought a change in Turkey, which for lack of sufficient financial security did not come about.
After the 2008-2009 season with just two appearances for Hansa he tried again to force a change in Turkey. End of the season his contract was finally cancelled in Rostock, and Yelen moved to the Turkish first division side Trabzonspor.
In July 2011, Yelen joined second division club FSV Frankfurt.
He played twice in 2008 Toulon Tournament and five times in the 2009 Union of European Football Associations European Under-21 Football Championship qualification.