Manchester United defeated visiting and English Premier League (EPL) leaders Chelsea 2-0 at the Old Trafford to revive the fight for the title on Sunday.
Marcus Rashford and Ander Herrera scored early in each half as United blew the title race wide open and boosted their own hopes of finishing in the top four with a valuable victory at Old Trafford.
Matteo Darmian has backed Manchester United team-mate Marcus Rashford to become one of the world's top forwards after seeing him score in Sunday's 2-0 win at home to Premier League leaders Chelsea.
Victory lifted United to fifth place, four points below Manchester City, who occupy the fourth and final Champions League place, with a game in hand.
The Blues barely managed an attack of note and a second defeat in their last four league games leaves them clinging to a four-point lead over second placed Tottenham, who had piled on the pressure with a 4-0 rout of Bournemouth on Saturday.
The England global was on the mark this past weekend with a crucial goal in the 2-0 win over Chelsea, with the result keeping United's hopes of a top four finish in the Premier League alive. I am just concentrating on each game and when the manager calls on me I will give 100 per cent and look to play as well as I can.
"But I have always said that I want to play as much as possible".
"For sure, I have concern because we have to work together and find quickly the right ambition to win this title", he said.
"But it's a great feeling to know that it's hard for us to lose a match, people fight until the end". We have a lot of match-winners, it was not just a case of Eden Hazard being man marked and taken out the game.
Referencing that quarter-final clash, Mourinho said: "That game was totally controlled when we played with 11 players, and only the decision that made us play with 10 players gave Chelsea a chance to be dominant".
"There are only six games left and we are still in a good position".
United's performance was one of their best since Mourinho took charge last summer and the Portuguese praised his players' attitude.
"I think it can be a good night on Thursday but we have to try to win because it is the most important thing".