Ole Gunnar Solskjaer hailed his rampant Manchester United side and declared they have rediscovered their “X-factor”.
Bruno Fernandes scored twice, with Marcus Rashford and Daniel James also on the scoresheet, as United all but booked their place in the last 16.
After inspiring United to victory, Fernandes said it was time for Solskjaer’s side to “grow up” if they are serious about ending their four-year wait for a trophy.
Having faltered in the Premier League in recent weeks, United were back to their best in the Europa League, with Solskjaer hailing their star quality.
“That little X-factor, I felt we got it back today,” said Solskjaer.
“We found ourselves a little bit tonight, I thought the boys got that little bit of zip back in their legs again.”
Paying tribute to match-winner Fernandes, Solskjaer said: “He never rests on his laurels. If he scores two, he wants three and he drives everyone on.
“Sometimes he drives too much and does too much, but tonight he played his position well and you can see how efficient he is.”
United have not won a trophy since 2017, but Fernandes believes they can end that wait this season – as long as they continue to learn and get better.
“We don’t have to look for the results, we have to look for the performance,” said Fernandes.
“We know we don’t perform well in some games. But still, in some games, we don’t get the result we want and perform well.
“So we need to understand, we need to grow up, get better and better and, of course, the most important thing is the results to give you confidence to go to the next game.
“My target is scoring the most goals I can and trying to assist my team-mates to score too.
“But the most important target is trophies. To win trophies is more important than scoring goals.”