Jose Mourinho has never been the type to keep his feelings to himself when he feels hard done by, and we saw this in action during the 2004-05 season when Luis Garcia's notorious 'Ghost Goal' for Liverpool knocked Mourinho's Chelsea out of the Champions League.
The semi-final took place long before VAR or even goal-line technology.
And so, when Garcia's effort was deemed to have crossed the line after what might have been a last-man foul by Petr Cech in the build-up, Chelsea kept 11 men on the pitch but found themselves a goal down.
Mourinho's men had chances to come back, with Eidur Gudjohnsen's late miss perhaps the best of them. However, after seeing his players denied a chance of Champions League glory, Mourinho let loose.
It wasn't the first such occasion, and it wouldn't be the last. Here, Mirror Football looks back at some of the former Porto manager's angriest moments over his illustrious career.
Liverpool v Chelsea, 2005
"Bring out the linesman and ask him why he awarded the goal," Mourinho said after the Liverpool game, as reported at the time by The Guardian. "It must be 100% in and he must be 100% sure it is.
"My players say it's not a goal. Other people say nobody can confirm it was a goal. Only one person decided the future of a team and of players who have never played in a Champions League final.
"Players make mistakes and he made a mistake. But I must accept that. Football is sometimes cruel. It sometimes goes your way and sometimes it goes against you.
"They scored if you can say that. You can say the linesman's scored. It was a goal coming from the moon or from the Anfield Road stands."
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Chelsea v Barcelona, 2006
The following season, Chelsea's Champions League run ended even earlier. The Blues were drawn against Barcelona in the last 16, and a first-leg defeat set the tone for their eventual elimination.
The most contentious decision that night was the red card shown to Chelsea defender Asier del Horno. The Spaniard was dismissed for a foul on Lionel Messi, prompting Mourinho to hit out at the Barca man.
"Can we suspend Messi for what you call in Barcelona play-acting?" Mourinho asked after the game. "Barcelona is a very cultured city. It's a place where they understand all about the theatre.
"I think it's of course not a red card. The kid is not just a very good player; he's more than that. He jumps and provokes contact with Del Horno and because of that the referee gives him the red card.
"It's not a red card. Of course not, and for the second time we have to play 55-60 minutes without a man and that is completely different."
Chelsea were eliminated after a 1-1 draw at Camp Nou. Barcelona went on to win the competition that season, beating Arsenal in the final, and Mourinho never won the Champions League in either of his spells with the London club.
Chelsea v Swansea, 2015
Mourinho's second Chelsea stint wasn't without its moments of anger, and - after the 2014-15 title win - it took just one league game for things to get heated. It began when team doctor Eva Carneiro and colleague Jon Fearn ran onto the pitch to treat Eden Hazard during a 2-2 draw with Swansea City.
The manager was visibly furious over the incident, which took place when Chelsea were already down to 10 men. Hazard had to leave the field after the treatment, when the Blues were already clinging on for a draw.
Mourinho would later admit to shouting "filho da puta" [son of a b****] in Carneiro's direction, but the latter had claimed the words used were "filha da puta" [daughter of a b****] . "Filho da puta is a phrase I often use, all of the players know it. There is no sexist connotation in the use of the phrase - it is just like saying 'f*** off'," Mourinho said.
Chelsea would later reach a settlement with the doctor, issuing a public apology. "The club regrets the circumstances which led to Dr Carneiro leaving the club and apologises unreservedly to her and her family for the distress caused," the statement read. "We wish to place on record that in running onto the pitch Dr Carneiro was following both the rules of the game and fulfilling her responsibility to the players as a doctor, putting their safety first."
Chelsea v Southampton, 2015
Later that same season, with Mourinho under increasing pressure at Chelsea, his team was beaten at home by Southampton. This time, though, his target had changed as he risked the wrath of the FA in a seven-minute tirade.
"I think it's time to be a little bit honest and to say, clearly, the referees are afraid to give decisions for Chelsea," he said in a Sky Sports interview. "[With] the result [at] 1-1, it's a huge penalty, and once more we don't get [the decision].
"I repeat, if the FA wants to punish me they can punish me. They don't punish other managers, they punish me, it's not a problem for me.
"I want to say it again - referees are afraid to give decisions for Chelsea. Why? Because when they give [them] there is always a question mark from you, there is always a question, there is always a critic, so we are always punished."
Mourinho was, perhaps unsurprisingly, punished for his comments. Specifically, he was handed a £50,000 fine and a suspended one-match stadium ban.
Manchester United v Sevilla, 2018
United cruised through their Champions League group under Mourinho in the 2017-18 season, winning five games out of six and conceding just three goals. In the last 16, however, a Wissam Ben Yedder double sent Sevilla through at their expense.
On this occasion, it wasn't the officials who bore the brunt of Mourinho's response. Instead, as his team prepared to return to domestic action, he launched an infamous "football heritage" rant with a year-by-year breakdown of the team's progress.
"I say to the fans that the fans are the fans and have the right to their opinions and reactions but there is something that I used to call football heritage," he said. "And what a manager inherits is something like the last time Manchester United won the Champions League which didn't happen a lot of times, was in 2008.
"So in seven years with four different managers, once not qualify for Europe, twice out in the group phase and the best was the quarter final, this is football heritage and if you want to go to the Premier League, the last victory was 2012/13 and in the four consecutive seasons United finish fourth fifth, sixth and seventh."
The defeat to Sevilla would ultimately be Mourinho's last European knockout game as United manager. He was dismissed in December 2018, with their last-16 Champions League game yet to take place.
Inter Milan v Roma, 2022
Mourinho has not mellowed as his career has drawn on. Far from it.
After a cup defeat at Inter, the Roma boss reportedly let rip at his own players, rather than at the officials. "I want to know why, you s*** yourself in the first 10 minutes," he said, as reported by Corriere dello Sport (via Football Italia ). "And then I want to know why you s*** yourself against [AC] Milan for ten minutes. Each one of you, no exceptions.
"I want to know why you've become so small against big teams for the last two years. If we are small, referees will treat us as such. Inter are a super team, but rather than find motivation, you s*** yourself.
"The worse shortcoming for a man is lack of balls and personality. Are you scared about big games? Then go to play in Serie C, without pressure, without champions and big stadiums."
Roma have stuck with Mourinho since that outburst. While the Giallorossi won't be playing Champions League football next season, they could secure their first trophy under the Portuguese boss, with the Europa Conference League within reach.
