Career
Erdem had begun his career at a local club, Alanya Belediyespor, based in Antalya. He was trained there until 2005 before joining Beşiktaş. After a short spell, he was promoted to senior squad by French manager Jean Tigana in 2006.
Erdem then joined on loan in the 2007-2008 season.
At the end of the season, was promoted to the Süper Lig. In the 2008-2009 season, he returned Beşiktaş and began to train at senior squad again, under manager Ertuğrul Sağlam.
However, he was loaned out to İzmir club Altay.