Like watching two teams 10 leagues apart, ' noted one supporter in damning assessment of United inferiority.
Marcus Rashford hit the crossbar after 35 seconds, while Scott McTominay had an opportunity one minutes later, though the Catalans woke up after those scares.
Barcelona's Argentinian forward Lionel Messi (C) celebrates with Barcelona's Brazilian midfielder Philippe Coutinho after scoring during the UEFA Champions League quarter-final second leg football match between Barcelona and Manchester United at the Camp Nou stadium in Barcelona on April 16, 2019.
Hopefully a pre-season under Ole will see the Manchester United squad improve but more important there's a need to invest smart and not just invest big.
"If we want to get back to Man Utd's true level, true traditions, we have to challenge Barcelona".
The Argentinian, who was relatively quite in last Wednesday's 1-0 first-leg victory at Old Trafford, swiftly doubled the lead to effectively put Barcelona into the last four for the first time since 2015.
"We have done two good games. Whenever he gets the ball around the box he will be decisive and unfortunately for us he was the victor for them". Instead, De Gea let it squirm under his body for 2-0.
They made an enterprising start as Marcus Rashford struck the top of the crossbar in the first few seconds but were thoroughly second best after five-time Ballon d'Or victor Messi opened the scoring after 16 minutes.
"You know the level, you can not slip up and make mistakes".
"Yeah, that is the level we have to aspire to because that's the level we have been", Solskjaer told MUTV.
"Messi is an exceptional talent, him and Cristiano (Ronaldo) have been the best players in the world in the last decade".
"You have to lift them (the players)".
Tonight, the Reds are preparing to use last week's 2-0 first leg win at Anfield as a springboard into a semi-final against Barca.
"We had a lot of hope for this tie, it was a long time since we have been in the semi-finals and we had a very painful defeat a year ago", he said.