According to leaked documents from Football Leaks (via
Der Spiegel), Bayern Munich were exploring possible exit from Bundesliga and Champions League.
In 2016 Bayern Munich bosses tasked the international law firm Cleary Gottlieb to understand the perspectives of creating new league and effect of not participating in domestic and European leagues.
Several questions, including the obligation to send players to national teams during international break, were discussed back then.
According to another document, Bayern also wanted to initiate new Super League alongside with other tops of European football.