Manchester United are officially out of the 2021/22 FA Cup.

The Red Devils were beaten in a penalty shootout by Middlesbrough on Friday evening at Old Trafford following a 1-1 draw after normal and extra time, Anthony Elanga missing the crucial spot kick.

Cristiano Ronaldo failed to hit the target from the penalty spot in the first half as well, while Bruno Fernandes was also guilty of a horrendous miss in open play.

All in all, it was a night to forget for United and that's certainly not the first time that's happened against Boro.

Back in 2005, Sir Alex Ferguson's side were beaten 4-1 at the Riverside, a result that prompted a quite extraordinary rant from club legend Roy Keane on MUTV.

In the "Roy Keane Plays The Pundit" section of a show, the Irishman tore into a number of players, including Rio Ferdinand - who was at fault for one of the goals on the day.

"I have seen that happen to Rio before," Keane said.

MANCHESTER, UNITED KINGDOM - DECEMBER 14: Rio Ferdinand of Manchester United looks dejected as he is substituted during the FA Barclays Premiership match between Manchester United and Wigan Athletic at Old Trafford on December 14, 2005 in Manchester, England. (Photo by Alex Livesey/Getty Images)

"It is poor defending. Just because you are paid £120,000 a week and play well for 20 minutes against Tottenham you think you are a superstar."

Unsurprisingly, footage of the interview was never broadcast and United tried to destroy all copies of the tape.

Keane was eventually fined £5,000 by the club and never played for them again. Here's the scathing rant in full...

Keane's MUTV rant in 2005

MANCHESTER, ENGLAND - AUGUST 9: Roy Keane of Manchester United during the Champions League third qualifying round, first leg match between Manchester United and Debreceni VSC at Old Trafford on August 9, 2005 in Manchester, England. (Photo by Clive Brunskill/Getty Images)

On Edwin van der Sar: "He should have saved that (a 30-yard goal from Gaizka Mendieta). That was saveable."

On John O'Shea: "He's just strolling around when he should have been busting a gut to get back."

On Darren Fletcher: "I can't understand why people in Scotland rave about Darren Fletcher."

On Kieran Richardson: "He is a lazy defender who deserved to get punished. He wasn't doing his job."

On Alan Smith: "What is he doing there? He is wandering around as if he is lost. He doesn't know what he is doing."

On youth players involved in the game: "When they [the young players] sign the contracts, they think they have made it. They owe it to the manager, the staff and the fans. They think they have made it. They haven't."

On experienced players involved in the game: "The younger players have been let down by some of the more experienced ones - they are not leading. There is a shortage of characters."

"It seems to be in this club you have to play badly to be rewarded. Maybe that is what I should do when I come back - play badly."

On the result: "I wasn't surprised by the result, I had been expecting one like this. The players have been asked questions and they are just not coming up with the answers.

"I am sick of having to say it and they are sick of listening to me. They have let down the club, the manager, and the fans."

Wow. No wonder Ferguson and United were livid...

In his autobiography, the Scotsman wrote: "He criticised his team-mates. We could not release that video. It ended up with two young players being booed in Paris [against Lille] on the Wednesday.

"The meeting in the room was horrendous. I just could not lose my control in that situation. If I had let it pass I think the players would have viewed me differently.

"Throughout my career I have been strong enough to deal with issues like that.

"Roy absolutely overstepped the line. There was nothing else we could do."

Shortly after one of the most infamous moments in United's modern history, Keane joined Celtic, before calling time on his glittering career in 2006.

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