Michael Carrick revealed Manchester United midfielder Carlos Baleba's injury "doesn't look great".
Baleba suffered a hamstring injury during United's stunning comeback victory over Roma in the Champions League on Tuesday.
Despite finding themselves 2-0 down at Old Trafford, a Bruno Fernandes penalty and Matheus Cunha brace saw the Red Devils secure a much-needed win.
Baleba won seven of his eight duels, including both aerial duels, and completed 100% of his dribbles (2/2) before being replaced in the 51st minute by Youri Tielemans.
The 22-year-old has only featured seven times for United this season after missing the start of the campaign with an ankle injury.
Since his first start for United (October 13 v Atletico Madrid), Baleba has won the joint-most duels of any Red Devils midfielder (27), holds the second-best duel success rate (64.3%) and has won the joint-third-most tackles (five).
"I haven't got any more news on Carlos at this stage," said Carrick.
"It's his hamstring, so we'll just have to assess what that looks like. Initially, it doesn't look great. Timelines, I haven't got much more to give you."
United host Aston Villa in their final match before the international break, though face a huge trip to Anfield in their first game back.
Carrick could receive a boost ahead of their clash with Villa, with Patrick Dorgu returning to training after a hamstring injury.
United are 17th in the Premier League after nine games, level on points with Crystal Palace one place below them in the relegation zone.
fapaekpyz
0
you sign injury pro players
cadcdlmz
1
man united you are very foolish and you have to go at championship
tapadlns
2
not bad
Vowbekosz
0
should never buy him
IshmaelChimombo
0
very sad 😔
Veuamoptyz
1
Eggs in one basket can break easily 😋
Wusabikuy
1
why always thek purchase injured players. look at Radford, de ligt, Martinez also got injured last year, Luke shaw,.. why they are not purchasing only 2-3 good and fit played instead of buying 10 slow and injured players
J-Alex
0
Our Midfield is playing ruasian roulette... In en out