FC Köln, SC Paderborn 07, SV Waldhof Mannheim and FSV Oggersheim, in Switzerland with Neuchâtel Xamax, and in Cyprus for Enosis Paralimni.

Donkov was a member of the Bulgaria national team with which he participated at Euro 1996.

[3] Donkov continued as assistant coach, after a manager was hired during the summer break.

In May 2012, after Reinhard Stumpf was fired, Donkov was once again named caretaker manager until the end of the season[4] and later signed a permanent deal as the clubs new manager.

[6] He became the assistant coach of his country's national football team in October 2016.