Manchester United booked their place in the Europa League semi-finals following the 3-2 aggregate win as United had welcomed Anderlecht to Old Trafford tied at 1-1 after last week’s first leg.
Henrikh Mkhitaryan and Marcus Rashford managed to find the back of the net on Thursday night and cancel out Sofiane Hanni’s first-half equaliser.
Speaking after the game, Mourinho addressed injuries to Rojo and Ibrahimovic.
“I don’t think they are easy injuries, but I prefer to wait until all the tests are done until after tomorrow,” he said.
“I will then speak how I feel.
“For now I can’t as I’m not a doctor but I think it is very negative.”
They were both been taken off with knee problems and are serious doubts for Sunday’s visit to Burnley in the Premier League.
It didn’t look great for either of them and it’ll be a massive blow to have the duo out of action as they’ve been vital players at United this season.