Hannover have confirmed that sporting director Jorg Schmadtke will leave his position at the club on Saturday.
Former Dusseldorf and Freiburg goalkeeper Schmadtke's contract with the Bundesliga side was due to expire this summer. Hannover president Martin Kind was keen for Schmadtke to stay and continue his excellent working relationship with coach Mirko Slomka but he has instead decided to depart.
Schmadtke said: "This is a very intense emotional time for me. I thank the management, staff and fans for their strong support."
Joining the club's hierarchy in 2009, Schmadtke has helped them to consecutive Europa League qualifications as well as a club record fourth-placed finish in the Bundesliga in 2011.
In a statement on the club's official website, Kind said: "I regret this development. Jorg Schmadtke has expressed a very clear desire to terminate his employment with us at short notice. We have complied with this request.
"Jorg Schmadtke has, over the past few years, worked very successfully here. He has made good and important decisions and is largely responsible for the positive development of Hannover in the sporting arena.
"For this we are very grateful to him and we wish him well for the future, both professionally and personally."
Hannover are currently 10th in the Bundesliga at present, four points from the European places with three games to go.