If you ask 100 Manchester City fans why they boo the Champions League anthem, you'll get a combination of reasons as to why they personally dislike UEFA but below are listed the more common reasons.
The core reason stems from UEFA's treatment of Manchester City fans during their Champions League group stage tie with CSKA Moscow, which was supposed to be held behind closed doors after the Russian club's fans were banned for racist behaviour.
The ban came too late for some City fans who had already booked their flights, their hotels etc, and when they asked UEFA to reimburse them because the City fans were not the ones being punished, UEFA refused.
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To add insult to injury, a few hundred Russian fans managed to get their hands on some tickets, perhaps through sponsors and the media, and proceeded to support their team 'from behind closed doors', complete with banners and an empty away end. Some disadvantage there.
During their next game in the competition, fans booed the anthem in protest of UEFA not being able to enforce their own rules properly and costing the fan group, as a whole, thousands of pounds because of their thoughtless actions. UEFA then fined Manchester City for their audible jeering, much to the bemusement of football fans across the continent.
Before this more recent incident, which was picked up on by the national press, Citizens were booing the anthem for UEFA's hypocritical application or their own rules.
Back in 2012 when the Sky Blues were in the Europe League, City took on FC Porto, who proceeded to racially abuse City's former striker Mario Balotelli. UEFA fined Porto €20,000 for the incident.
A few weeks later, however, during City's tie with Sporting Lison, the team returned to the pitch for the second-half a minute late and UEFA fined them €30,000. It's obvious to see how the two fines don't make sense.
City fans also feel aggrieved by Financial Fair Play (FFP) which they saw as an obvious attempt to halt their progress after they were receiving large transfers budgets for a few consecutive windows.
Even after complying with the regulations, the club failed retrospectively after a rule change and threatened with expulsion from Europe's premier competition.
But the biggest question which remains unanswered however is why the Champions League even has an anthem.
Are Manchester City fans right to boo the Champions League anthem? Have YOUR say in the comment section below!