A 3-1 loss at West Ham on Saturday means United have taken 10 points from their first seven games of the season, recording their joint worst start to a Premier League season, equalling the beginning of the ill-fated David Moyes era.
Goals from Felipe Anderson and Marko Arnautovic either side of a Victor Lindelof own goal confirmed what was a humbling defeat for United, but one of the big questions in the minutes leading up to kick off surrounded the status of Sanchez - who was not named in the squad.
Mourinho can potentially save the club's season from becoming a complete disaster by having a positive experience in Europe.
He would prefer not to have to find a short-term replacement, even if that may be unavoidable if primary, longer-term targets are out of reach for now, while some readily available candidates may be less enamoured by the prospect of a stopgap role. We had a very strong team.
United now look far from contenders, but they can take a huge step towards the last 16 by moving six points clear of Valencia in Group H on Tuesday.
"I thought to play him as a second striker would be easier for him and at the same time I feel we need quality on ball in the building up from the back and Scott McTominay has that quality with the ball". I'm not a fan of Mourinho - if he was made of chocolate he would eat himself.More news: Lindsay Lohan "Rescue" Attempt Of Refugee Children Backfires In Bizarre Instagram Video
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As the inquests were ramped up after another sub-par display that leaves United's Premier League title hopes already wanting, former midfielder Scholes said: "At this minute, I think this club seems to be in a bit of a mess".
"We didn't look like a team today that was going to beat West Ham. It was not good enough from a Man Utd team with all the talent we have". It just wasn't good enough from us.
Left-back Shaw apologised to supporters for United's "awful" performance at the London Stadium and said the players needed to take a hard look at themselves. That didn't happen. It's disappointing and a very, very bad day for us. "But every player is different, every player is a different person".
After stripping Pogba of Manchester United's vice-captaincy last week, Mourinho insisted that there had been no falling-out with the club's record signing.