Bayern Munich manager Carlo Ancelotti says the Bavarians were "penalised" by central referee Viktor Kassai's decisions in their 4-2 Champions League defeat against Real Madrid at the Bernabeu on Tuesday.
They were not the only people disappointed with the refereeing.
Bayern tried hard in extra time, but the extra man was a key factor and Ronaldo made it 2-2 on the night in the 105th minute, after receiving the ball in an offside positon.
However, a freakish own goal from Real captain Sergio Ramos levelled things up at 3-3 overall before Bayern saw midfielder Arturo Vidal sent off late on and they went into extra time with 10 men. The ref? I talked to Ancelotti and that's it, I never go into referees.
Bayern teammates Philip Lahm and Xabi Alonso will hang up their boots in a matter of weeks, meaning the defeat in the Bernabeu spelled the end of their Champions League playing days.
"We knew that, if we didn't play really well, Bayern can score goals on any pitch", he said.
The holders won 6-3 on aggregate, but Bayern took the tie to extra time after it finished 2-1 to the Germans after 90 minutes, thanks to Robert Lewandowski's penalty and an own goal from Sergio Ramos.
It gave Madrid the upper hand going into the added 30 minutes and they took advantage when Ronaldo scored the crucial second from Ramos's cross, despite being in an offside position.
Bayern were left incensed, though, as Ronaldos second and third goals were clearly offside.
Bayern's veteran winger Franck Ribery is one of the most outspoken men in football.
CEO Karl-Heinz Rummenigge was also critical of Kassai's decision to send off Vidal with Bayern on the verge of extra time.
"We did not put in a flawless performance, but we acted like men on the pitch if you look at the way the game developed", Muller told reporters.
"The important thing was to get through to the next round against a great team, very strong". "It wasn't even a foul".
Atletico Madrid's Saul Niguez, picks up Antoine Griezmann as they celebrate after the Champions League quarterfinal second leg soccer match between Leicester City and Atletico Madrid at King Power Stadium, Leicester, England, Tuesday, April 18, 2017. Besides, the first yellow card could have been a red card, after a tough tackle with Isco Alarcón.