Mason Mount starred as Manchester United roared back to crush Athletic Bilbao 4-1 on Thursday and 7-1 on aggregate, setting up a mouthwatering Europa League final against Tottenham.

United, 3-0 up after the first leg, fell behind to a superb strike from Mikel Jauregizar and looked nervy and untidy as they fought to find their feet at Old Trafford.

But a flurry of second-half substitutions — including the entrance of Mount and Amad Diallo — changed the complexion of the game completely and led to a United onslaught.

Mount, a peripheral figure since his move from Chelsea two years ago, produced an excellent turn and shot into the far corner to bring much-needed relief in the 72nd minute.

Casemiro scored a header from a Bruno Fernandes cross seven minutes later before Rasmus Hojlund converted from close range.

And there was still time for Mount to score a breathtaking second from near the halfway line in stoppage time, with goalkeeper Julen Agirrezabala well out of position.

United, after a terrible Premier League season, have a chance to end the campaign on a high note with the showdown against Tottenham in Bilbao on May 21.

Spurs beat Norwegian champions Bodo/Glimt 5-1 on aggregate.

“I’m just worried about the next game, trying to not get any injuries for the final,” United manager Ruben Amorim told TNT Sports. “If we don’t win the final, it means nothing for us.

“We have to have a full squad (against Tottenham), stay in the game and have a bit of luck and we have to be clinical.

“It’s quite similar for me and (Spurs boss) Ange (Postecoglou). It is a tough moment (for us both) and one of us is going to win. It’s going to be a big final.”

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