There was plenty of uproar surrounding Bayern Munich’s Champions League exit at the hands of Real Madrid on Tuesday.Referee Viktor Kassai made a string of errors, including allowing two Cristiano Ronaldo goals that appeared offside, harshly sending off Arturo Vidal and refusing to show Casemiro a red card.Madrid went on to win the game 4-2, securing a 6-3 aggregate victory and progression to the semi-finals of the tournament.As for Bayern, it marks another year of disappointment in Europe’s elite competition. For a club with such a fabled history, a record of one Champions League trophy in their last 16 attempts is rather poor.They were unable to get beyond the semi-final stage in three seasons under Pep Guardiola and Carlo Ancelotti’s first European campaign in Germany has ended even earlier.The Italian, a three-time winner of the competition, slammed Kassai for not being “up to the task” of refereeing such a high-profile match as Madrid versus Bayern."We had thought of everything going into this game - except the referee," Ancelotti said, per BBC Sport.

"You can't decide a semi-final spot like this. It shouldn't happen at this level.”

The 57-year-old added: “The referee probably wasn't up to the task.

"I don't think Real Madrid have any influence on referees. The officials simply got it wrong. I had never been in favour of video technology, but I must admit it's necessary now."

Bayern's players were angry

Ancelotti wasn’t the only one to express his frustration at Bayern’s perceived injustice. Vidal, Thiago Alcantara and Robert Lewandowski all reportedly paid Kassai a visit in his dressing room after the game, while the Chilean and Franck Ribery both took to social media to mock Ronaldo’s offside goals.

Bayern reacted to Friday's draw

Three days on and Bayern still feel aggrieved. After the semi-final draw was made on Friday, one of the club’s official Twitter accounts posted an image that tells you exactly what the Bavarians make of their absence.

Clearly, Tuesday’s wounds still haven’t healed.

And then there were four

Bayern will have to sit and watch Monaco, Juventus and both Madrid sides compete for the coveted trophy.

Los Blancos will host their rivals on May 2, with Monaco taking on Juventus in France a day later.

The return fixtures will be played on May 9 and May 10.

Who will win the Champions League? Let us know in the comments section below!