Jose Mourinho explains Wayne Rooney absence from Man Utd Europa League squad
The Manchester United captain has not travelled to Belgium for the club's Europa League quarter final first-leg against Anderlecht.
Rooney returned to training this morning but did not board the flight to Brussels with his teammates this afternoon.
Mourinho spoke to the press this evening ahead of tomorrow's 20.05 kick-off.
"He's not happy with his condition," the United boss told reporters.
"He's trying to work. He has a bad feeling in his ankle and he's not ready yet.
"Let's see for the weekend or for the next.
"We need everyone with minimum condition to play, to try to be available."
31-year-old Rooney last started a Premier League fixture at the beginning of March - just his second league start since December 17.
Following the attack on the Borussia Dortmund team bus last night, there has been heightened security concerns in Brussels ahead of the fixture.
Mourinho stated that his team must focus on Anderlecht while saying solidarity with those affected by the attack is important.
"I try not to think too much about it.
"I try to focus on our job and to focus on why we're there to play
"This is a quarter final, we have to be focused on it and that's what we try to do.
"Obviously, solidarity with what happened yesterday with the players that cannot play today, with the people that were scared.
"As I was saying, we have to trust the people who are working with our security.
"We have to believe that the match tomoorow will be what people want it to be - a very good game.
"I try to focus on the football."