Per Bild, the lack of a main language used by coach Gerardo Seoane when addressing the team is causing problems in the locker room.
Unlike most other Bundesliga clubs, German language courses are not mandatory at Leverkusen. Players are struggling to bond without the ability to fully understand each other, as many players stick within their own sub-groups.
This looks to be one of the many reasons for Leverkusen's struggles to start the season. Sitting in 15th place with only one win recorded, Die Werkself now face a daunting away test against a motivated Bayern side.