He immediately fell to the pitch in obvious pain and held his knee before being attended to by the Manchester United physios.
Aged 31, Wayne Rooney, has been sidelined due to a double ankle injury since making a substitute appearance against West Brom, April 1. He was always a player I support because he was always coming in my direction and giving me what I want, so it is about that.
Mourinho will make changes to the team that finished Thursday's game against Anderlecht by recalling Spanish midfielder Ander Herrera's for Sunday's trip to Burnley.
Victory saw Mourinho's men stumble a step closer to the Stockholm finale 3-2 on aggregate, but the Old Trafford quarter-final second leg proved costly as Marcos Rojo and Zlatan Ibrahimovic sustained what appear to be serious injuries.
"We are together now for nearly 10 months and the same way I know the players much better now, the players should know me also much better now", said Mourinho, who opted for Jesse Lingaard and Rashford in attack against Chelsea. You only have to look at the performance of this squad last Sunday, they limited Chelsea to hardly any shots on target at all.More news: Get A Look At The First Game Of Thrones Season 7 Images
If Ibrahimovic does indeed miss the next few matches as it appears he will, Mourinho will need Rashford to get the goals to secure Champions League football next season, be that via the Premier League or the Europa League.
"His experience, his know-how of this knock-out phase - I think he's a player that can be useful tomorrow [Thursday]". Ashley Young is fresh to play. "There is nobody else to play".
Marcus Rashford scored United's extra-time victor against Anderlecht and looks set to deputise up front for top scorer Ibrahimovic, who is still to commit himself to United beyond the end of the season. The 35-year-old limped off under his own power. Nicky Butt could play him in that game because of his age.
"I'm happy I chose this club because I think this club is the biggest in Manchester, in England and one of the biggest in the world. But the power is in their hands".