Bayern Munich's expected re-appointment of Jupp Heynckes as coach for a fourth stint has been delayed.
News agency dpa says the club is trying to fulfill the 72-year-old Heynckes' request for Peter Hermann to return as assistant coach.
Hermann, currently coaching at second-division club Fortuna Duesseldorf, worked with Heynckes at Bayer Leverkusen and then at Bayern when they won the Champions League, Bundesliga and German Cup treble in 2013.
Hermann says the decision to leave Duesseldorf is "difficult, very difficult. But I have a bond with Jupp Heynckes and I want to do him the favor. I owe him a lot and want to give him something back."
Heynckes has confirmed an offer from Bayern to take over as Carlo Ancelotti's replacement.