The moment is optimal to switch Manchester United's system - Ruben Amorim insists.

Boss Ruben Amorim argues that switching Manchester United's tactical system due to public scrutiny would have signaled "his demise" for him.

For the first time against Newcastle United, Amorim moved away from his trademark back three setup with wing-backs and instead use an orthodox four-man defense shielded by two central midfielders.

He himself conceded this ultimately became a back six in the closing phase as his team clung on for a win - securing just their second shutout of the campaign.

Despite he once memorably remarked that even the highest authority could pressure him to tweak his system, Amorim insists the capacity to play with different formations has always been part of his plan.

Nevertheless, he emphasizes he could only implement the change when his team were faring at an acceptable level - lest it would seem as if he was bowing to outside criticism.

"When I arrived here last season, I recognized maybe I didn't possess the personnel to perform effectively in that formation, but it was the commencement of a journey," he stated.

"We were trying to establish an identity. Today is a distinct juncture. We lack a lot of personnel, and we need be flexible, so they understand why we are switching things up.

"It is not because of the demands of the media, or the fans.

"When the press discuss changing the system repeatedly, I can't change because the players will understand I'm altering things because of you and I believe that is the downfall for the coach.

"Only when we are getting results in our preferred setup, then is the opportunity to adapt.

"We are going to become a better side because when our full complement of personnel are available, we are not intending to employ three defenders in every match."

Squad Challenges Continue

Having only two wins in their last eight outings prior to beating Newcastle, it is arguable whether Amorim is accurate to say his team have been playing well.

He is, though, operating with a depleted roster, with seven first-team stars already ruled out for the upcoming home game against winless Wolves.

That figure will rise if playmaker Mason Mount is unable to recover the injury that led to his exit from the Newcastle game at half-time.

Captain Bruno Fernandes is among those who will be absent for the Wolves match, despite the fact he is understood to be pushing his manager to allow him to return following his hamstring problem.

"Bruno is already insisting he has to practice," said Amorim. "However there is absolutely no possibility he is going to play against Wolves. No chance. You can quote me on that."

The Captain's Role Remains

Nevertheless, the Portuguese star will probably still be a prominent presence, as whereas most injured stars view matches from the stands, Fernandes was observed monitoring the pre-match routines from the mouth of the tunnel before the Newcastle game.

Amorim expects his leader to continue offering insight.

"He is a natural leader," he declared. "He cannot be that guy that when he is absent, he's silent and speaking. He's constantly vocal. That's why he's the captain.

"There are flaws sometimes - the way he gesticulates - but he has a multitude of positive qualities. After he finishes treatment, he goes to watch the other guys practicing. There are a many things you don't see.

"I'm not sure if he wants my position or not, but he's a leader. He is a leader."

Recovery Schedule for Injured Players

Although the specific date for the captain's return - and that of other unavailable players like Kobbie Mainoo, Matthijs de Ligt, and Harry Maguire - remains unknown, before the conclusion of January, United will see the return of Noussair Mazraoui, Amad Diallo, and Bryan Mbeumo from international competition.