The striker snubbed Arsenal to stay at the King Power on a new £100,000-a-week deal after Euro 2016 is a guaranteed starter every week and enjoys a close relationship with the fans.
"At the general level what I can say is myself and the Manchester United board, the owners, we don't believe a lot in the January market, we don't believe in signing a player just to sign a player, just to do something, we don't believe in that".
Manchester United have launched an audacious bid for Sanchez, in a bid to snatch the 29-year-old forward from under the noses of local rivals Manchester City. In the midst, the striker has been seen busy promoting his A-Z brand through his social media channels.
Speaking ahead of Monday evening's Premier League fixture against Stoke City, Mourinho said: "Zlatan is injured and is not totally happy with his condition". He fought like a tiger, like he likes to say, to be back, which he did.
"He consulted a Doctor and we made the decision to stop". When he's feeling really good, he can come back to work. "The date for him to be back training with the team is around the end of January and beginning of February".
Alexis has made 21 appearances for the Gunners in all competitions this season, scoring eight goals and providing four assists. Also, the sure absentee will be center-back Eric Bailly.
During the long lay off in between fixtures, United were able to jet off to Dubai for some warm weather training. The prince's private facilities are better than any football club in the world.
Now, the Portuguese boss has set a time frame on for when he should return to training.