The game was won by the Andalusian's side desire to play football against the negative tactics employed by United's Portuguese coach Jose Mourinho who's game-plan appeared to be use long balls from De Gea looking for Fellaini or Lukaku.
The outspoken Irishman told ITV : "Pogba is a big problem and if he can't get in the starting 11 then you're in trouble".
"I am not going to run away or disappear or to cry because I heard a few boos", added the 55-year-old.More news: US, South Korea to Resume Joint Drills on April 1
"In 2017, play Europa League, win Europa League with me and goes back to Champions League". I beat Liverpool, Chelsea, I lose against Sevilla and now is their moment to be happy. An easy life, and the fans not upset, and no critics?
While a section of the Manchester United fans have been impressed by the way Mourinho came out fighting, many still believe he provided yet more excuses for his failure to properly challenge for the league title and compete in Europe. "My god, you know you're in trouble".
"If you're selected, you're going to play for United but they are short at the top level and their record in the last three or four years will tell you that".
"And the good thing for me and the fantastic feeling for me is that I am (on) exactly in the same page as the owners, as (executive vice-chairman) Mr (Ed) Woodward, as (managing director) Mr (Richard) Arnold". Not from the last two years'.More news: Magic Leap AR glasses are officially open to content creators
The former Real Madrid boss vehemently defended his own record and insists that the job he is doing at United is a long-term project, which he says is still in its infancy. "I can not tell you before a Champions League match".
In the other quarter-final Mark Hughes takes charge of Southampton for the first time hoping to avoid becoming the third-tier Wigan Athletic's fourth Premier League scalp of an wonderful Cup run. "All the others not even a quarterfinal, that's football heritage".
"I've seen this side be dominated in terms of possession far too many times by far lesser sides, and it's really very worrying for Manchester United fans".
It's the classic phrase uttered by Manchester United fans in response to any criticism of their manager's boring, defensive, conservative style of play. Is that [Nicolas] Otamendi, Kevin De Bruyne, Fernandinho, [David] Silva, [Raheem] Sterling, [Sergio] Aguero - they are investments from the past, not from the last two years. 'Other clubs are not ready to win. They will find players with a different mentality, different quality, different background, with a different status, different knowhow. He has scored eight goals in seven games in European soccer's elite competition and might have just earned himself a place in France's 2018 FIFA World Cup squad. I have an incredible job to do.More news: Del Potro edges Federer in a thriller