Paul Pogba underwent a scan on his hamstring injury behind closed doors at Manchester United’s training ground on Wednesday.
United invested millions in state-of-the-art medical equipment at their Carrington base to assess stars rather than utilising nearby hospitals.
Pogba headed straight for the tunnel after pulling up just 19 minutes into Tuesday’s Champions League victory over Basle and later left Old Trafford on crutches.
Paul Pogba has had a scan on his injured hamstring behind closed doors at Carrington and has posted a photograph on his Instagram, saying: ‘When you know all will be fine’
Pogba’s Champions League opening game was cut short as Manchester United beat Basle 3-0
The 24-year-old – and captain on the night – limped off at old Trafford after just 19 minutes
It is his second hamstring problem in six months and Jose Mourinho fears he could miss a cluster of matches before October’s international break.
United face Everton, Southampton and Crystal Palace in the Premier League, plus a trip to CSKA Moscow in Europe.
Mourinho faces an anxious wait to see the extent of the setback, with their first game back after the internationals being at Liverpool just a month away.
‘Paul’s going to be a massive miss and hopefully we can get him back fit as soon as possible,’ Marcus Rashford said.
‘That’s why you have such a strong squad. It’s good for the manager, it’s good for the players as well because we’re always playing for competition.’
He has since had a scan behind closed doors at United’s Carrington training ground
Pogba’s absence could open the door for Ander Herrera, who was not included in the squad against Basle.
Herrera, crowned Player of the Year last season, was not injured and finds himself behind Marouane Fellaini in the midfield pecking order.
Mourinho confirmed Pogba is definitely ruled out of the return of Wayne Rooney on Sunday, while Jesse Lingard claimed Romelu Lukaku can emulate their former captain.
Asked if the Belgian, who already has six goals for United, can become an icon, Lingard said: ‘Yeah, I think Rom’s a very nice lad, he’s got his feet on the ground, he doesn’t let anything faze him.
Team-mate Marcus Rashford believes Pogba will be a ‘massive miss’ for Jose Mourinho’s team
‘As long as he keeps scoring the goals he is going to make the headlines. He holds the ball up well but he also runs in behind defences.
‘He’s very strong in the box he is very good with his head, so he gives a lot of options for the man on the ball.’
POTENTIAL GAMES WITHOUT POGBA
Everton (H) Sep 17
Burton Albion (H) Sep 20
Southampton (A) Sep 23
CSKA Moscow (A) Sep 27
Crystal Palace (H) Sep 30
Rooney will line up at Old Trafford just hours before appearing before Stockport magistrates’ court after being charged for drink driving earlier this month.
Lingard still believes the striker will be afforded a huge ovation. ‘Wayne will get a very good reception,’ he added. ‘He’s a legend at the club and we will always welcome him back.
‘You could say he (Rooney) has got unfinished business at Everton but Romelu has come in and we are focused on playing with him now.’