The former Hannover and Kaiserslautern coach will take charge at the BayArena for the rest of the campaign
Tayfun Korkut has been appointed Roger Schmidt's replacement as Bayer Leverkusen coach until the end of the season.
Schmidt was dismissed on Sunday, 24 hours on from the 6-2 hammering at Borussia Dortmund that saw the club's board lose patience and left Leverkusen trailing the top four by 11 points.
Former Turkey international Korkut has been charged with steadying the ship, as Leverkusen at least attempt to haul themselves back into contention for European football.
However, his appointment is not likely to result in a swell of anticipation with the 42-year-old's two most recent jobs leaving a lot to be desired.