A raging Arturo Vidal branded the referee a "clown" who had "robbed" Bayern Munich of a place in the Champions League semi-finals after the Germans were knocked out in controversial circumstances by Real Madrid.
Midfielder Vidal was harshly sent off in the 84th minute of the second-leg clash at the Bernabeu, as Bayern led 2-1 after 90 minutes to force extra-time before the 10 men conceded three times in the additional period to fall to a 6-3 aggregate defeat.
Vidal, who missed a penalty in the first leg, was shown a second yellow card by Hungarian referee Viktor Kassai for a sliding tackle on Marco Asensio, while Bayern also felt Cristiano Ronaldo's two extra-time goals should have been ruled out for offside.
Bayern winger Franck Ribery expressed his disappointment on social media, posting images of Ronaldo in an offside position before writing: "One year of hard work, thank you referee, bravo!"
Reports from Spain also claim Vidal, Robert Lewandowski and Thiago Alcantara all stormed into the referee's dressing room after the match to voice their anger.
Meanwhile, Barcelona defender Gerard Pique - who has often claimed referees favour Real - tweeted "..." following a string of decisions which went the way of the Madrid club.