Tuesday night was nothing short of a disaster for Manchester United.

Jose Mourinho's side were full of confidence going into their second leg against Sevilla, having disposed of bitter rivals Liverpool just a few days prior.

However, they came crashing down to earth as they put in an extremely disappointing performance, with a 2-1 defeat spelling the end of their hopes of winning a fourth European Cup title.

Mourinho said at the end of December that the £300 million he has spent since becoming Man United manager in 2016 has 'not been enough', and he reiterated his desire to be given more backing in the transfer market again after the defeat last night.

"Everything, everything has to change," Mourinho said after his side's exit. "Everybody spends money, right? Not just us, right? It's a natural process, every team invests. It's not a change for the sake of changing.

"It's a natural process and we're not the only team that invests money, all clubs invest money in players."

MOURINHO IS PLANNING AN OVERHAUL

As a result of their Champions League exit last night, it has been reported that Mourinho is even more convinced that his squad needs massive changes in the summer.

According to the Independent, the Portuguese wants four key players to join the club in the summer, whereas he is also willing to let as many as seven players leave. 

THE FOUR PLAYERS BEING TARGETED

The Independent claim that two positions in particular are of importance to Mourinho: centre-back and central midfield.

Eric Bailly has proven that he is one of the best defenders in the Premier League, but it is clear that Phil Jones, Chris Smalling and Marcos Rojo are not up to the standard required at Old Trafford.

Thus, Mourinho will look to Samuel Umtiti from Barcelona or Toby Alderweireld from Tottenham to solidify the position.

The centre of midfield also needs to be resolved, especially so given the impending retirement of Michael Carrick and the uncertainty of Marouane Fellaini's future.

One name that has been mentioned in the past is Real Madrid midfielder Toni Kroos, and it is believed he is still a main target at Old Trafford.

However, Man United may have to part ways with star goalkeeper David de Gea in order to finalise a deal for the German, with Marca reporting earlier today that he remains 'high on the wish list' for Los Blancos.

The other main target for Mourinho at centre midfield is Marco Verratti, and it has been suggested that the English side will try and swap him with Paul Pogba.

The report states that although the Frenchman's relationship with Mourinho has improved, it still isn't completely fixed, and so contingency plans have been made in case it again worsens.

Nevertheless, if Man United are able to add a world-class centre-back to partner Bailly and either Verratti or Kroos to strengthen the midfield, they would undoubtedly be a much stronger side next season.