UEFA has opened disciplinary proceedings against Bayern Munich after its fans launched a protest about ticket prices at last Wednesday’s Champions League match at Anderlecht, reports ESPN.

During their team’s 2-1 win at Constant Vanden Stock Staium in Brussels, Bayern fans threw fake money onto the field, delaying play, and held up a banner that read in German, “Are your necks not full?”, and in English, “I$ your gr€€d now finally $ati$fi€d?”

Independent Bayern fan group Club No. 12 claimed responsibility for the protest, and released a statement explaining their grievances.

For today’s CL game, the host club RSC Anderlecht has set a price of 100 euros for 85% of the tickets, which were made available to the fans of FC Bayern. Even by the standards of the generally high-priced Champions League, this represents a new dimension for a preliminary round game.

In a recent survey of Club No. 12 among more than 2500 Bayern fans, about 91 percent rate this ticket price as “completely inappropriate”. By comparison, just six years ago, for example, a ticket price of 18 euros was called up at Inter Milan for a considerably more attractive first knockout match.

The club goes on to thank FC Bayern, who actually subsidized ticket prices at their own expense by €30 euros, leaving fans to pay €70, but still contend that “even a ticket price of 70 Euro does not seem appropriate to many fans” and that “subsidizing out-of-home tickets through your own club can not be a long-term solution”.

Club No. 12 also notes that many individual fans and several other “ultragruppen”, or fan clubs, keen on traveling for the team opted out of the Anderlecht match due to ticket prices.

The group accused Bayern of a breach of UEFA’s Safety and Security Regulations, arguing that “the prohibition of discriminating against guest fans also means that the away fans must also be offered tickets of the cheapest category for home fans”. They pointed out that home tickets for that game were sold to Anderlecht fans in a package for three group matches that equaled €47 per match.

This isn’t the first time Bayern fans have protested protested ticket prices; they held up banners and threw toilet paper rolls onto the field at Emirates Stadium in the Champions League match against Arsenal in October 2015, when tickets cost around €85.

European football’s governing body is charging FC Bayern Munich with an “illicit banner” and the “throwing of objects”, and the case will be heard by its ethics and disciplinary body on Dec. 7.

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