Manchester United will have pick themselves up and dust themselves off quickly ahead of their weekend fixture against Everton after being defeated 4-0 on aggregate by Barcelona in the Champions League quarter-finals.

United were clearly out of their depth at the Nou Camp and never really looked a threat, going out with a whimper as a result.

Ole Gunnar Solskjaer has now lost five of his last seven games as boss, confirming that the honeymoon period of his time in charge is well and truly over.

The Norwegian's predecessor Jose Mourinho, who left the club in December after a poor start to the season, had his say on the Red Devils performance.

He certainly didn't hold back either.

"Lots of mistakes, lots of goals with awful defending on the inside foot," Mourinho told Russia Today.

"You look to Coutinho goal, even to Messi's goal.

"I think United's approach was different. I think in the first game they tried to occupy that central zone because Messi's position is easy to understand but is not easy to create a cage to control him," Mourinho added.

"Because he comes from the right, then stays in the middle, and then [Ivan] Rakitic defends on the right and allows him to stay in the middle between the lines. It's very difficult. 

"Manchester United in the first match, zonally, they occupied that central area very well. So when he came into the inside he was finding Fred, he was finding [Scott] McTominay coming to the inside all the time."

The Portuguese coach believes the game was won and lost in the centre of the park and the fact that United allowed Barcelona - especially Messi - so much space to penetrate.

"In this match, maybe because Man United were losing 1-0, they tried to start the game with a different perspective.

"And then it was [Paul] Pogba wide on the left and McTominay much more on the right and Jesse Lingard playing as a number 10 behind the strikers. And in front of the defensive line was only Fred."

Fred is not known as the best defensive midfielder at the best of times, so you can imagine what Mourinho thought about the Brazilian being the sole player to cover Messi's main territory.

"That's the area where Messi comes and gets the ball and when Messi has the ball. One on one. You are dead."