The 29-year-old has scored just once this season and has failed to display the devastating form which marked him out as one of the Premier Leagues most devastating forwards during his time at Arsenal.
Sanchez suffered a serious hamstring injury in training last week and is likely to miss up to 10 matches with United hopeful he will be fit in time to take part in the FA Cup third round tie against Reading in the second week of January.
As well as his struggles on the pitch, Sanchez has had to come to terms with the break-up of his long-term relationship with former girlfriend Mayte Rodriguez and United chiefs, including Mourinho, believe the former Barcelona star would benefit from an extended break in his homeland, according to the Independent.
There have been no scans yet. But the player is experienced, the player knows what the injury is and also from the top of my experience, just the painful scream and the way the injury happened, I know its going to be for a long time, the United manager said ahead of last weekends draw with Southampton.
It is not the little muscular injury that in one week or 10 days the player is ready.
For me and also for Alexis, the feelings before the scans is that the grade [of the hamstring injury] is different than for (Victor) Lindelof.
The Lindelof one was not an easy one, so Alexis has what I used to call an aggressive muscular injury.
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