Manchester United’s new manager Louis van Gaal (left) holds the team’s jersey alongside club’s ambassador Sir Bobby Charlton at Old Trafford yesterday.

New Manchester United coach Louis van Gaal said he believes he can meet expectations for success at “the biggest club in the world” but refused to indulge in forecasts when he was introduced to the media at Old Trafford yesterday.

The Dutchman, smiling and looking relaxed after arriving from his stint as Netherlands manager at the World Cup, also made clear that the commercial demands at United would make his job harder.

“I’m now two days here,” Van Gaal told reporters. “I’ve met a lot of people, and when you see that kind of people loving the club they expect a lot of me.

“Can I fulfil that expectation? I think I can, but because of the greatness of this club it is much more difficult than in another club.

“This club is also guided in a commercial way and we have to fulfil that also, but it is not always possible to fulfil both.

“I will do my utmost best. That’s what I can give. I cannot give predictions.”

The former Ajax, Barcelona and Bayern Munich coach added: “I cannot give predictions because you never know.

“It’s the biggest club in the world. Within two days, I know already how important Manchester United is, but also how important the sponsors are.

“I have to adapt to this big club. It will not be easy, but you can see what I have won.”

The 62-year-old coach has been asked to make United a force again after last season’s dismal campaign under David Moyes.

They finished seventh in the Premier League and failed to secure European football.

But Van Gaal’s early double reference to United’s sponsorship imperatives is likely to intrigue and alarm supporters.

The club is saddled with approximately $600 million in long-term debt following the takeover by the Glazer family, and the inference to be drawn from Van Gaal’s comments is that he fears the club’s commercial pressures may compromise the footballing priorities.

United, who this week announced a record kit deal with adidas worth $130 million a season for 10 years, have added England defender Luke Shaw and Spanish midfielder Ander Herrera to their squad this summer for a combined cost of £56 million.

Van Gaal said he had approved their signings from a list of transfer targets compiled by Moyes, but the Dutchman added that he would wait to assess the United squad before trying to buy more new players.

“First, I want to see the players performing my philosophy,” he said.

“Then, I will think about signing new players.

“I want to look at the players here at present. I know the players, but I have not trained and coached them. It will take three or four weeks to see what they can do before we buy other players.

“Shaw and Herrera were already on the list and I approved them because I liked them.”

Reports say the club covets at least one more midfielder and one central defender, in the wake of the departures of Nemanja Vidic and Rio Ferdinand.

Asked what he would characterise as success in his first season at United, he said: “I don’t know. First I need to see how quick the players can pick up my philosophy.

“I haven’t worked with most of them so we have to wait and see.

“It’s very important there is a click between the players and the manager. For me, the challenge is always first not fourth.”

Van Gaal said Ferguson – the Scot whose 26-year reign all successive United managers will be reminded of – had telephoned him to wish him luck.

Van Gaal – who said he hoped to find coaching roles for former United players Paul Scholes and Phil Neville, as well as Nicky Butt, who is already working with the squad – took his first training session on Wednesday.

Carrick injury blow

But he will get a chance to analyse the current players in detail when they fly to the United States today for a pre-season tour.

One player who will not be forming part of the United squad in the US is Michael Carrick who will miss the start of season after undergoing surgery on a serious ankle injury.

The 32-year-old England midfielder sustained an ankle ligament injury in training earlier this week and underwent an operation yesterday morning, ruling him out of action for between 10 to 12 weeks.

“Michael Carrick was injured in the last day or the day before,” Van Gaal told reporters.

“So that is, in my opinion, a big blow because he is an experienced player.”