The 23-year-old Ivorian picked up the injury while on global duty in October and hasn't played for United since their loss to Chelsea on Nov 5.
He took his chance alright, becoming one of United's key players on the way to Europa League glory in the second half of the season and he even started the current campaign as first-choice number 10, repaying Mourinho for his renewed faith with two goals and six assists in a barnstorming beginning to the season.
The derby defeat against leaders Manchester City on Sunday, and their neighbours' rampant form, appears to have had a major impact on United this week as they stare at an 11-point gap to Pep Guardiola's side.
Mourinho revealed after the 1-0 win over Bournemouth on Wednesday night that the injury was more serious than first thought and they were deciding whether he would have to go under the knife.
But his form has progressively dipped this season and he has not started for Mourinho since United's defeat at Chelsea at the start of November, finding it increasingly hard to land a place even on the bench.
Missing 3-Year-Old Is Believed to Be Dead, Police Say
The FBI said it has been sending "items of interest" to its lab in Quantico, Virginia, for priority testing in the case. Though Mariah has not been found, officials say evidence gathered during the investigation indicates she may be dead.
Best meteor shower of 2017 peaks tonight
NASA will be streaming the shower from its Marshall Space Flight Center beginning at sunset from Huntsville, Alabama. The best way to view tonight's shower is with the human eye so there is no need to use binoculars or a telescope.
Xiaomi Mi A1 December Security patch is rolling out
Google Pixel 2 and Pixel 2 Xl with the second developer preview of Android 8 .1 Oreo shall receive the OTA (over-the-air) update. The handset at this price point not only brings better camera quality than the Redmi Note 4, it also flaunts vanilla Android.
WWE's Rich Swann Arrested, Suspended By Company
He was set to face Drew Gulak in a number one contendership match for Enzo Amore's Cruiserweight Championship on Monday's Raw . It started with an argument between Swann and wife Vannarah Riggs in a vehicle, said the Gainesville Police Department.
Android Oreo (Go Edition) Released For Low-powered Phones
The latest Android version - Android Oreo , which is also called Android O - will be the first one to get the Go edition. This special version of the Google Assistant in both English and Hindi will appear on the new Reliance JioPhones.
Trump to record robocall for Roy Moore
However, the president's daughter-in-law Lara Trump via robocall invited some Alabama voters to the rally in Florida. The New York Times reported last month that Trump was angry with his daughter for speaking out against Moore.
Olympics: Russia Can Compete as Neutral
That commission, chaired by International Olympic Committee member Denis Oswald, was tasked with handling individual cases. There were no flawless options, but this decision will clearly make it less likely that this ever happens again.