Time is optimal to alter Manchester United's system - Ruben Amorim insists.

Head coach Ruben Amorim argues that switching Manchester United's formation due to public noise would have meant "the finish" for him.

In a first against Newcastle, Amorim ditched his trademark three-at-the-back setup with wide defenders and opted to deploy an traditional back four shielded by two central midfielders.

Amorim acknowledged this effectively transformed into a six-man defensive block in the latter stages as his team held on for a win - securing just their second-ever shutout of the campaign.

While he once memorably said that not even the highest authority could pressure him to change his system, Amorim insists the option to utilize varied formations has always been part of his strategy.

Nevertheless, he clarifies he could only make the switch when his team were doing sufficiently well - lest it would seem as if he was succumbing to outside pressure.

"At the time I came here last season, I realized perhaps I don't have the players to perform effectively in a back three, but it was the commencement of a process," he stated.

"Our aim was to build an identity. Now is a separate juncture. We lack a full complement of players, and we need adjust, so they understand why we are changing.

"The change isn't because of the pressure of you guys, or the faithful.

"Whenever you talk about altering the system constantly, I cannot change because the squad will understand I'm changing because of you and I feel that is the downfall for the manager.

"When we are performing strongly in our preferred setup, that is the right time to change.

"We will grow into a more complete side because when all the personnel are available, we are not intending to employ a back three exclusively."

Availability Crisis Persist

Having just two wins in their last eight outings before beating Newcastle, it is debatable whether Amorim is accurate to claim his side have been in good form.

He is, nonetheless, managing with a depleted squad, with multiple first-team players already unavailable for the upcoming fixture against struggling Wolves.

That total will rise if playmaker Mason Mount is unable to recover the knock that led to his withdrawal from the Newcastle game at the interval.

Captain Bruno Fernandes is among those who will miss the Wolves clash, even though he is understood to be pressing his manager to let him to return following his hamstring problem.

"Bruno is already insisting he has to train," revealed Amorim. "However there is no chance he is going to feature against Wolves. No chance. That's definitive."

The Captain's Role Remains

Nevertheless, the Portuguese star will probably continue to be deeply engaged, as whereas most injured players view matches from the stands, Fernandes was spotted monitoring the warm-ups from the entrance of the tunnel before the Newcastle game.

Amorim expects his captain to carry on offering guidance.

"He is a leader," he declared. "He must not be that guy that when he is absent, he's silent and offering advice. He's always vocal. That is the reason he's the skipper.

"There are bad things at times - the way he moves his arms - but he has a multitude of good things. After he recovers, he goes to watch the other guys practicing. There are a many aspects you don't see.

"I don't know if he desires my job or not, but he's a born leader. The guy is a leader."

Recovery Schedule for Injured Players

While the precise timeline for Fernandes' comeback - and that of other injured stars like Kobbie Mainoo, Matthijs de Ligt, and Harry Maguire - remains unknown, before the conclusion of January, United will welcome back Noussair Mazraoui, Amad Diallo, and Bryan Mbeumo from international competition.