Manchester United fear Paul Pogba is facing hamstring surgery.
Pogba limped out of United's 3-0 Champions League win over Basel on September 12.
And Finnish surgeon Sakari Orava says he has been consulted on the injury, with United set to make a decision next week on whether Pogba goes under the knife.
Orava, who operated on £138 million Barcelona winger Ousmane Dembele on Tuesday, said: “The decision on surgery will be made next week.
"His injury is a little different to Dembele, so he could heal without surgery."
On Friday Jose Mourinho admitted he had “no idea" how many games Pogba would miss.