The feeling in Sevilla after that extraordinary second half at Old Trafford is that, as they say it, the Europa League could be coming home after all.
They were no-hopers when the draw was made, too busy fighting against relegation to dream of beating Manchester United.
But there is a new air of optimism circulating around the club's famous Sanchez Pizjuan stadium, only slightly dented by the sight of Marcus Rashford back in training on the eve of the game.
Ivan Rakitic admitted to the club's television channel that after the first leg he wasn't even thinking about the weekend's league game against Valencia – he was just desperate for the second leg to come around.
The Croatian midfielder has won the tournament once, with Sevilla in 2014. The club has won it a record six times.
'Once again we are in the quarter-finals, once again we can reach the semis of our competition. Everyone thought it was clear about what was going to happen when we drew United, but now we've changed things,' said the experienced midfielder.
Rakitic also made reference to the home advantage Sevilla will enjoy on Thursday.
'They don't know what awaits them, they have a lot of experience and many are worth over £100million, but they don't know what a packed Ramón Sanchez-Pizjuan is like.'
Rakitic told the club's television channel that the atmosphere in Sevilla's 43,000 concrete bowl will inspire Sevilla's more recent arrivals who have not known a big European night.
Players signed last summer or in January have only known misery in what has been a hugely disappointing season but Rakitic said: 'Thursday will not be just a normal game. Thursday will be something else - it's going to be crazy.'
Sevilla's newfound optimism isn't just rooted in the way the first leg went; they have not lost since they changed their manager.
They won Jose Luis Mendilibar's first game in charge and should have won the second too but conceded very late goals and had to satisfy themselves with a draw.
They then salvaged that draw against United and beat Valencia at the weekend in that game that Rakitic said he could hardly concentrate on because he was already thinking about facing Manchester United.
Gone is the confusion that reigned under Jorge Sampaoli with Rakitic himself a victim of finding himself playing part of one game as a false nine.
The closest Mendilibar has come to a tactical aberration was playing Erik Lamela at centre-forward in the first leg.
Referring to the reaction to his team selection at Old Trafford he said after the game: 'I knew if it went wrong they were going to kill me.'
It didn't go wrong and Youseff Nesyri climbed off the bench to score the late leveller. He is expected to start the home game.
Because of the last three results in LaLiga Sevilla now look certain to stay up, so avoiding their first relegation since 2000.
That has given them a financial security going into the summer and it will be further boosted by a place in the semi-finals of the Europa League worth around €2.8m euros (£2.4m).
But this is about more than money for the club that consider themselves the Real Madrid of Europe's second competition. It's about the glory for Sevilla.
As Sporting Director Monchi once said: 'Nobody takes positive end of year financial reports around the city on an open top bus at the end of the season. The fans want trophies.'
If Sevilla get past United they will still face a likely semi-final against Juventus with the possibility of Dutch champions in waiting Feyenoord or Jose Mourinho's Roma in the final.
But having slain the slayers of Barcelona and Real Betis, they feel they will have taken a huge step to a seventh Europa League if they can beat United.