In January 2000, the then new coach of AEK Athens, Giannis Pathiakakis brought him to the club.

But affected by various injuries he his declining performances during his last seasons resulted in leaving AEK in the summer of 2005, having won 2 Greek Cups.

In 2008 he returned to Bulgaria and played in Cherno More for two seasons before ending his career in Dobrudzha in 2011.

[3] Petkov was part of the Bulgarian World Cup 1998 team and Bulgarian 2004 European Football Championship team, which was eliminated in the first round, finishing bottom of Group C, having finished top of Qualifying Group 8 in the pre-tournament phase.

This biographical article related to association football in Bulgaria, about a midfielder, is a stub.