Barca now progress to the semi-final stage of the competition, as they bid to win their sixth Champions League title.
The magician popped up to double Barcelona's lead with an effort from his weaker right foot which inexplicably went through David de Gea's gloves, killing the game before half time.More news: Chinese video sharing app TikTok banned in India
90 - Ninety per cent of Manchester United's Champions League goals this season have come away from home.
0 - In their first leg defeat, Manchester United failed to register a single shot on target for the first time in a Champions League game since March 2005 (0-1 v AC Milan).
That effectively ended the contest - while Coutinho added gloss to the scoreline with a superb strike from distance after the interval - though Solskjaer was understandably reticent to criticise a goalkeeper who has so often come to United's aid in recent years and who made a point-blank save from Sergi Roberto on the stroke of half-time. "They have two shots on target and two goals". One of sheer brilliance and the second with some luck.
Barca were flustered, so much so the crowd even cheered with relief when Arthur Melo played his team's first convincing pass.More news: Fiji fall apart in Singapore 7s final
First he took too long at a free-kick and put United in danger by going backwards (1), then he passed the ball straight at Ivan Rakitic (2) before doing a pointless Cruyff Turn (3) and giving it away again (4).
The second was simpler. Instead, De Gea let it squirm under his body for 2-0.
Messi could have had his hat-trick too after Luis Suarez found him with a superb cutback and there was an nearly comical sequence in the second half when the Argentinian played with his United chasers before finally being bundled over by McTominay.More news: Duke’s Zion Williamson declares for the NBA Draft
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