Ruben Amorim has urged Manchester United supporters not to get carried away by warning that “the storm will come” and his side will be found out in some games.

United face Arsenal at Emirates Stadium on Wednesday night in the toughest test yet of Amorim’s short reign, and visit champions Manchester City in the derby clash on December 15 after a home game against Nottingham Forest.

A 4-0 win over Everton on Sunday, which followed a 3-2 victory over Bodo/Glimt in the Europa League and 1-1 draw at Ipswich Town in Amorim’s first game in charge extended United’s unbeaten run to seven matches.

Amorim has introduced a back three and new system since succeeding Erik ten Hag but, with little time to work on those changes on the training pitch given the congested schedule, the Portuguese says there will be problems along the way.

“I would like to say different things, but I have to say it again: the storm will come,” said Amorim, who warned after the Ipswich match that United are “going to suffer for a long period”.

“I don’t know if you use that expression but we are going to have difficult moments and we will be found out in some games. And I know that because I’m [getting to] know my players and I know football and I follow football.

“So I understand the difference between the teams and we are at the point we are putting simple things in the team, without training, and you feel it in this game against Everton.

“They changed a little bit the way they were building up – they are a very good team and we were with a lot of problems because we cannot change it by calling one thing to the captain because we don’t have this [time] training.”

‘We are in a different point – if you compare with Arsenal’

Amorim added: “I know it’s really hard to be a Manchester United coach and say these things – we want to win all the time, no matter what, and we are going to try to win.

“But we know that we are in a different point, if you compare to Arsenal. We will try to win it and we go with confidence to win but we know that we need to play very well to win the next football match.”

Amorim admitted he was a huge admirer of the job Mikel Arteta had done at Arsenal, not least in terms of developing younger talent such as Bukayo Saka, William Saliba and Martin Odegaard, and hoped to have a similar impact at Old Trafford.

“I think he’s done an amazing job,” Amorim said. “Sometimes the coaches are just judged about the titles, but what he has been doing in Arsenal, I think, is amazing. It transformed the team.

“He bought some youngsters that now are the big talents in this country. I hope to have the same mindset that he had in the difficult moments because I followed the Premier League for a long time. I think it’s a very good characteristic in Mikel and I think he did a great job.”

Arsenal have invested considerable faith and time in Arteta, but Amorim said the scrutiny is such at United that he may need to deliver more quickly than the Spaniard.

“That is also always important for a coach to have that confidence, but we have to acknowledge that Manchester United is a little bit different – all the attention that you guys put in here, all the time,” he said. ”So I know that sometimes it is not possible to have all that time. So we will try to manage that and try to do things a little bit more fast knowing that here is a massive attention and massive judgment every day.”

Extension imminent for versatile Diallo

One youngster who has made an immediate impression under Amorim is Amad Diallo, who has impressed at right wing-back. The Ivory Coast international is out of contract at the end of the season, although United have an option to extend his deal by 12 months to June 2026 and Amorim admitted his future needed resolving.

“I think he wants to stay and we want him to stay, so that is clear and we will find a solution,” he said.

Amorim said Amad’s versatility and ability to play in different positions, including as a No 10, was “one of his great advantages”. “He’s very good playing in that position but also playing between the lines, because he has good control and he seems faster with the ball than without the ball,” the head coach said. “He is capable of playing in both positions and he can play in different systems. So in the future, we will play in a different system, maybe. So it’s that kind of player that we need in the team.”

Asked why he was playing Amad at wing-back rather than behind the striker, Amorim said: “Because of his left foot, sometimes in that position, the way he receives the ball, if you are right-footed, sometimes you don’t have the space to come inside.

“But we have, for example, [Noussair] Mazraoui and [Diogo] Dalot who can go inside because they are fast and strong with the ball. But we chose Amad to have one against one outside. And that is very important to break some pressures, especially high pressures, and he has that ability. And then in that position, you need to have a good physicality. Good physicality is not the size, but he can run and that is a key point in that position.

“So you try to choose players that you can put in that position and then the technical characteristics are perfect for him.”

‘This is my toughest period,’ says Shaw after latest setback

Luke Shaw says he is going through the “toughest period” of his career after the Manchester United defender suffered a fresh hamstring injury that is expected to rule him out for several weeks.

The England left-back made his first appearance for United since February in the 1-1 draw at Ipswich – Ruben Amorim’s first game as head coach – nine days ago.

Two more substitute outings followed against Bodo/Glimt and Everton, but Shaw is now set to be sidelined until later this month after sustaining an injury.

Sources say it is a new problem and not related to the hamstring injury he suffered in February or the subsequent calf problem that ruled him out for the first few months of this season after a brief cameo for England at the Euros in Germany.

But it is a bitter blow for the 29-year-old, who has averaged just 16 Premier League starts per season over more than a decade at Old Trafford since a £28 million move from Southampton in 2014.

‘There are going to be people frustrated, angry, disappointed’

In a statement on his social media feeds, Shaw said: “Hi guys, it’s hurting a lot having to write this, as I really thought I had got through my recent struggles and was on a positive path going forward, but unfortunately I’ve had a small setback.

“I’ve been through a lot of ups and downs but this has definitely been my toughest period. I’m absolutely devastated and it’s extremely tough to come to terms with reality at this moment in time.

“I understand there are going to be people frustrated, angry, disappointed, and I understand all that. There is no one feeling that more than me at this moment in time.

“But what I can promise is I will do everything I can to come back better soon, to help this club achieve its ambitions this season.

“Thank you to everyone for the support. It really doesn’t go unnoticed and I really do appreciate it.”