Marc-André ter Stegen didn't celebrate Barcelona's second goal because he shares the same position as David De Gea.
Manchester United's Spanish goalkeeper gifted Barcelona a goal in the 20th minute.
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He fumbled Lionel Messi's tame strike into his own net with his opposite number feeling his pain.
In fact, Barcelona's German stopper didn't celebrate his side's goal and he even had some words with De Gea following the Champions League fixture.
"After the game, I told De Gea that we are all humans and that this (the second goal) could have happened to me as well," he said.
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"The truth is that it took me a while to celebrate that goal, because he shares the same position as me, and i share his pain. But life will continue."
Ole Gunnar Solskjaer praised De Gea's performance despite his mistake between the sticks.
"That's unfortunate with goalkeepers," he said after United's 4-0 aggregate defeat to Barcelona.
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"When you make an error it can get highlighted and that'll be remembered tonight. But he made some fantastic saves as well, which all in all, his contribution to the team is good but sometimes that happens in football.
"You know when you get to this level you cannot slip up and you cannot make mistakes and you've got to take the chances you get yourself.
"And we didn't capitalise on our great chance, but then they have their first two shots on target, that's two goals and game over."
De Gea was also at fault for Felipe Anderson's goal last weekend against West Ham but United were able to beat the Hammers.
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His error, though, versus Barcelona proved very costly.
Meanwhile, United resume their Premier League campaign away at Everton on Sunday.
Featured Image Credit:Topics: Football News, Solskjaer, Football, Manchester United, Ole Gunnar, Barcelona, Messi, Champions League, De Gea