In a disappointing outing for RB Leipzig, they fell to a 3-1 defeat against Celtic on Tuesday night, continuing a troubling run of form across all competitions.
Gregor Kobel's injury has proven more complex than initially anticipated. The Borussia Dortmund goalkeeper suffered a setback during the DFB-Pokal defeat against Wolfsburg last week.
Granit Xhaka is set for a return to familiar ground as Bayer Leverkusen prepared to face Liverpool at Anfield in the Champions League on Tuesday.
Stefan Ortega is reportedly tempted by a return to Germany, with Bayer Leverkusen interested, as he eyes a move from Manchester City for regular first-team football.
Borussia Dortmund managed a hard-fought 2-1 victory over RB Leipzig on Saturday, but their injury troubles cast a shadow over the win.
Bayern Munich striker Thomas Muller is happy that the club's style of play under head coach Vincent Kompany is both pleasing to watch and very effective.