Manchester United saw their hopes of qualifying for the Champions League knockout stages dealt a huge blow as they lost 4-3 to Copenhagen on Wednesday night.
The Red Devils entered the clash knowing defeat would all but end their hopes of reaching the knockout stages of the competition.
United got their night off to a dream start with Rasmus Hojlund scoring twice.
However, they then suffered a huge blow after Marcus Rashford was sent off following a VAR review.
Man Utd star Marcus Rashford cost his side with his controversial red card during Copenhagen defeat
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Copenhagen scored two quick-fire goals to level the contest just before half time.
And though United were a man down, they put in a strong showing before going ahead following a Bruno Fernandes penalty.
That goal had seemed like it would be enough to give United a crucial European win.
However, late strikes from Lukas Lerager and Roony Bardghji turned the game around with Copenhagen taking all three points instead.
GB News now takes a look at four players who let United down as they succumbed to a ninth defeat of the campaign so far.
Marcus Rashford
It would be unfair to pile into Rashford too much.
His red card is highly debatable, with pundits such as Jamie Carragher, Owen Hargreaves and Paul Scholes all insisting he shouldn't have been sent off.
But there's no escaping the fact that Rashford, rightly or wrongly, cost his side the match.
United were flying prior to his controversial dismissal and his sending off has compounded a miserable start to the season for the 25-year-old so far.
Rashford needs his fortunes to change, fast, if he's to replicate his sensational goalscoring antics of last season.
Diogo Dalot
United once thought Diogo Dalot would be the perfect long-term replacement for Gary Neville.
However, he only ever seems to get a match at left-back these days.
And Dalot was poor against Copenhagen, producing one of his worst performances for the club as United fell apart.
The Portugal international switched off for the goal at 3-3 and looked defensively suspect throughout the contest.
He's not a Champions League level player - which makes United's decision to give him a bumper new contract last year all the more baffling.
Christian Eriksen
Christian Eriksen brings creativity to the United midfield.
But he looked leggy in midfield, with Copenhagen managing to run through him regularly during the first half.
Eriksen also seems to look awkward when playing alongside Scott McTominay at No 6.
And it wasn't a surprise to see the Denmark international hooked at half time, with Sofyan Amrabat brought on.
Eriksen did well for United last season but, so far this term, has failed to scale the heights many have come to expect.
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Raphael Varane
Man Utd star Diogo Dalot was poor defensively as his side lost to Copenhagen in the Champions League
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Ten Hag has raised eyebrows in recent weeks by regularly deploying Harry Maguire and Jonny Evans at centre-back.
Based on Raphael Varane's performance against Copenhagen, however, the Dutchman might have been onto something.
Varane was once one of the best defenders in the whole of world football, helping Real Madrid win four Champions League titles during his spell in Spain.
However, he's a shadow of the player he used to be with years of playing at the highest level starting to show.
Varane switched off when Copenhagen netted their first goal of the game and was poor with the ball at his feet. Not what the club would expect from such a decorated player...