Louis van Gaal admits he may not sign any more new players because of Manchester United's impressive pre-season form.
United go into their friendly against Real Madrid on Saturday having won all three of their matches on tour.
The victories against the Los Angeles Galaxy, Roma and Inter Milan, have given the new United boss confidence about his upcoming debut season at Old Trafford.
The Dutchman has been linked with a host of new signings, including Kevin Strootman, Thomas Vermaelen and Mats Hummels.
But Van Gaal has been so impressed with what he has seen from his squad that he says he may not need any reinforcements.
Manchester United: Potential summer transfer targets
Manchester United: Potential summer transfer targets
1/19 Arturo Vidal
The Juventus midfielder is among United's top targets this summer, particularly after impressing for Chile at the World Cup. Having helped his current team secure the Serie A title, Juventus aren't keen on letting him go.
2/19 Marco Reus
Rumoured to be near the top of United's target list, a possible swap deal involving cash and Shinji Kagawa has been mentioned. The Borussia Dortmund player would not be a cheap acquisition, especially given his recent declaration that he wants to stay at Dortmund next season
3/19 Arda Turan
Former manager David Moyes had been seen watching Turan, though his dismissal put a doubt over whether United were still interested. The winger's agent claims an offer has been made, so is the Atletico Madrid winger on his way to Old Trafford?
4/19 Arjen Robben
The Bayern Munich winger has said Van Gaal has offered him a place at Old Trafford if he wants it. Currently he's happy to stay where he is, but things can quickly change.
5/19 Claudio Marchisio
With Paul Pogba highly unlikely to be prised away from Juventus, United's attention could turn to team-mate Claudio Marchisio. The Italian international would provide some class and experience.
6/19 Mats Hummels
With defensive reinforcements high on United's list of priorities, Borussia Dortmund's Mats Hummels has unsurprisingly been linked with a move to Old Trafford. The German has been earmarked as the ideal replacement for the now-departed Rio Ferdinand and after his impressive showing at the World Cup, he's even more desirable.
7/19 Raphael Varane
Raphael Varane has already snubbed United once in his career, opting instead to join Real Madrid. It would surely take a big offer to prise the classy defender away now.
8/19 Seamus Coleman
Reportedly already the subject of a £15m bid, Seamus Coleman could be the man being lined up as the answer to United's problems at right-back.
9/19 William Carvalho
The Sporting Lisbon midfielder has reportedly been watched 15 times by Manchester United, although the £29m asking price could prove a stumbling block. The Portugal international has also been linked with Arsenal.
10/19 Xherdan Shaqiri
Bayern Munich winger Xherdan Shaqiri has struggled to force his way into the first team at the Allianz Arena and could be a target for United as well as rivals Liverpool. His impressive displays for Switzerland this summer could make it harder to prise him away.
11/19 Alex Song
Barcelona are understood to be ready to let the former Arsenal player leave this summer. Could provide some strength to United's midfield. Could also bring embarrassment judging by his behaviour at the World Cup.
12/19 Fabio Coentrao
Supposedly came within hours of signing in January, the Portuguese left back could be brought in to provide back-up to Luke Shaw.
13/19 Julian Draxler
A long time Arsenal target, United are reportedly interested in pinching the young German with a bumper offer. Seems unlikely though. Arsenal also strongly interested.
14/19 Sami Khedira
The Germany international is reportedly being pursued by a host of sides, and United might be wise to get in the mix as they look to add some quality to a fairly feeble looking midfield. Real Madrid appear open to letting him go with the 27-year-old having just one year left on his contract. Arsenal and Chelsea are among the others keen on signing the World Cup winner.
15/19 Edinson Cavani
The Uruguayan hitman would prove pricey and tricky to snatch away from PSG and it seems unlikely United have enough to offer him.
16/19 Luciano Vietto
The Racing Club youngster has been impressing in Argentina for some time although a move directly to United would be something of a surprise.
17/19 Santiago Arias
Should a move for Seamus Coleman fail, PSV defender Arias is reportedly being lined up by United. Played for Colombia throughout the group stage of the World Cup.
18/19 Miralem Pjanic
Rumoured to part of a joint bid including teammate Benatia, the Bosnian midfielder is reportedly another on United's large hit list.
19/19 Kevin Strootman
Van Gaal knows Strootman well from working with him in the Netherlands set-up and has indicated he is interested. Roma are reluctant to sell whilst his recovery from a knee injury may prove a stumbling block.
"We still have a month to go (before the transfer window shuts) and we are winning. Maybe we don't need other players," the United manager told a press conference at the Michigan Stadium.
"First I want to see the players who I have and give them an honest chance."
A record attendance of at least 109,000 is expected for the game, which is part of the International Champions Cup.
Should United win, they will qualify for Monday's final in Miami, where they are likely to play either Manchester City or Liverpool for a prize of one million US dollars (£600,000).
Van Gaal, who has criticised the travel and commercial demands placed on his players in the US, also voiced his frustration at the state of the pitch at the Michigan Stadium, which is more commonly known as the 'Big House' as it is the third-biggest stadium in the world.
The new pitch inside the arena, which is used primarily for college gridiron, was only laid on Sunday, much to Van Gaal's dismay.
The United boss has been annoyed with the surfaces on this tour, which has taken them to Los Angeles, Washington DC and Denver before they came to Ann Arbor, which is on the outskirts of Detroit.
"The pitch is not good," Van Gaal said after a training session which was watched by club co-chairman Avram Glazer.
"They are used to American football here and that is throwing the ball with the hand so it doesn't take care of the ground, the pitch is not so good.
"It's a pity because we have fantastic teams but we have to play on bad pitches so the ball is not rolling (well). It is difficult."
Wayne Rooney, sitting alongside Van Gaal at the press conference, said the pitch was "very soft".
The England striker, who is in the running to be named captain under Van Gaal, is looking forward to a new era under the Dutchman following last year's disappointing seventh-place finish.
The 28-year-old thinks playing alongside another striker in Van Gaal's 3-4-1-2 system will benefit him.
"I have enjoyed playing in the new system. The closer you are to goal, the better the chance you have of scoring goals," Rooney said.
"It's been great so far and hopefully the results will keep coming."
Van Gaal revealed Chris Smalling, who trained apart from the squad, will miss the game due to "minor problems".
Rooney, meanwhile, played down fears that arose when he started wearing a support on his right arm at the beginning of the tour.
"I just have had a sore wrist. It's no problem. It's just protecting it," he said.
Cristiano Ronaldo will miss the match against his former club as he is still regaining his fitness following a month off.
"Ronaldo is working hard but we won't put him out tomorrow," Real Madrid coach Carlo Ancelotti said.
"He will begin training with the squad (in Spain) after the tour as we plan to use him in the (European) Super Cup."
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