While speaking ahead of the game, Montella said: " Tomorrow is a special match for me.
"We don't have to win three, four, five, we have to win 1-0, 2-1, 5-4, 8-7... not to win would be a disappointment", he said.
"I think the Europa League final was our most important match in the last few years, because we won it and that victory brought us to our natural habitat, which is the Champions League", said Mourinho.
"You know, fortunately this year we're back there, back in the knockout stages where it really counts". There were, however, wins against both Malaga and Athletic Bilbao in between that sandiwch of defeats.
Your best bet is to check who is showing the game in your country, and if they have an online service or iOS/Android app to watch it on.
He was upset with a player and the same happened to me against Crystal Palace, where I was upset with my player and therefore they [the officials] understood that too.
"The dream of Manchester United is to be the top team and win the title but to do it we are going to have to make up a lot of points". Think a 2-1 defeat to Huddersfield Town, a draw away at Leicester City.
And on the injury front, Mourinho confirmed Anthony Martial is fit and available to play against Sevilla but was undecided on Paul Pogba.
Jose Mourinho has heaped praise on Romelu Lukaku after the striker helped Manchester United claim a 2-1 win over Liverpool FC on Saturday.
It's been one of the best spells in Manchester United's season in recent weeks. But a second-half comeback was typical more of the teams of old. Sevilla will go through if it ends in a score draw, and another 0-0 will see the tie go to extra time.
Vincenzo Montella is hoping it is fourth time lucky as Sevilla attempt to overcome Manchester United and reach the Champions League quarterfinals. Kick-off is at 19:45GMT, but we'll have build up for you before then before team news is out an hour before we get underway at Old Trafford.