Mourinho recently said Jones and Smalling wouldn't be back until mid-May but with Rojo now out, the coach called on the England center backs to play through the pain barrier to help out the team.
"He hadn't scored since September, some players don't understand what I want but Marcus I trust". With a top four spot via the Premier League looking hard, Jose Mourinho will want to make sure his team are in Europe's elite competition by going on to win the Europa League. "We hope it is not too serious and he seems okay". Yes, I think. Do I think he can play successfully for me?
"He has a good mentality, he is a fighter", the United boss said ahead of Sunday's trip to Burnley, where he confirmed Ander Herrera will start.
Marcus Rashford was Manchester United's hero with a dramatic extra-time victor that sealed a 3-2 aggregate victory over Anderlecht in the Europa League quarter-finals.
Rojo's injury deprives United of another centre-back at a time when Chris Smalling and Phil Jones are already sidelined.
After the break, United had a number of chances to put the tie to bed, with Zlatan Ibrahimovic and Paul Pogba both guilty of bad misses. "While mathematically it is possible in the Premier League, we have to fight for it", he said.
'Star Wars' Titles Lead The May Games With Gold Offerings
For Xbox One owners, the first Games with Gold game you can download is Giana Sisters: Twisted Dreams Director's Cut . This allows Xbox 360 games to run on the Xbox One without any special coding or other workarounds.
His match-winner sent United into the last four and Mourinho urged his players to retain belief in their ability to go on and win the Europa League.
The summer signing has, though, made far more of an impression this season than Martial and his away goal in last week's 1-1 draw could prove crucial in the Europa League quarter-final.
Jose Mourinho seems to be challenging some of his players to try to get them to reach their potential.
When asked after the match, a anxious United boss Jose Mourinho said: "I want to wait, but my feeling is not good for both".
"It s like him going to play now in the Under-23s to win, let s say, a derby against Man City".
"Do I think he can play successfully for me? But the power is in their (the Football Association s) hands".