Second-half goals from Raul Jimenez and Diogo Jota have sent Nuno Espirito Santo's side through to the last four, where they will face Watford, Manchester City, or the winners of Sunday's last quarter-final between Millwall and Brighton.
"Hopefully some of them will have good experience with the national team, some will have a few days off and train hard here". We didn't have the urgency or quality on the ball, the tempo wasn't high enough and we played into their hands.
Despite having much of the ball and countless opportunities to put themselves in front, the Red Devils never really troubled the Wanderers.
"You can look behind the result and say that was a good performance, we didn't get what we deserved".
His record is still mightily impressive - this was only United's third defeat in 19 games under his management - but the positive momentum of Solskjaer's early weeks in charge has given way to successive defeats.
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"We've got to think about the longevity as well, who's going to fit in personality-wise".
But after being lauded for his impact since replacing Jose Mourinho in mid-December, the painful truth for Solskjaer is that this latest United performance was as poor as anything they produced under his predecessor this season.
"We played well and we achieved it with the awesome support of our fans, pushing us and believing in us".
"What pleases me more is that as I walk down the steps there are people telling me they saw the 50s and the 60s and they are still coming".
"We've been on a good run now.it's not "squeaky bum time" like the gaffer used to say, but it tightens up". Very well done to the boys and it was a fantastic atmosphere.