Holland squad in CHAOS as 'flu outbreak' takes hold of players ahead of Saturday's do-or-die World Cup match with the USA, as Dutch manager Louis van Gaal reveals star midfielder Frenkie de Jong is among those infected

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Holland's World Cup team is dealing with an outbreak of 'flu symptoms' ahead of Saturday's round-of-16 matchup with Team USA in Qatar, and manager Louis van Gaal is admittedly concerned.

The 71-year-old van Gaal did not elaborate too much, but did confirm that star midfielder Frenkie de Jong is among the players battling illness right now.

'We are not going to elaborate on that,' van Gaal said. 'But if it goes around in the group, it is worrying.'

Despite his concerns, van Gaal explained that 'there are not 15 or so' cases, so, 'in principle, everyone is fit and available.'

Curiously, the Dutch did not do any 11-on-11 drills at practice, but van Gaal attributed that to rest, and not illness.

'I gave them a day of rest,' he said. 'With this group, they communicate that to me. I listen to my players.'

Holland is dealing with an outbreak of 'flu symptoms' ahead of Saturday's round-of-16 matchup with Team USA in Qatar, and manager Louis van Gaal (left) is admittedly concerned

The 71-year-old van Gaal did not elaborate too much, but did confirm that star midfielder Frenkie de Jong (pictured) is among the players battling illness right now

There are no shortages of ties between the American and Dutch squads, including Team USA manager Gregg Berhalter, who played professionally in Holland.

Berhalter said Friday that he felt like a student when he signed with the Dutch club Zwolle 28 years ago, but now plans to apply the lessons he learned when the teams face off on Saturday.

'I went to Holland just out of university and (was) totally unprepared for professional level soccer,' Berhalter said Friday. 'If I wasn't in Holland, I don't think I would have had that building that really helped shape my ideas.'

Now 49, Berhalter will match tactics against van Gaal, the oldest coach in the World Cup. Van Gaal guided the Dutch to third place in the 2014 tournament and has won seven league titles with Ajax, AZ Alkmaar, Barcelona and Bayern Munich.

Netherlands' Frenkie de Jong, Cody Gakpo, Nathan Ake, Tyrell Malacia, Xavi Simons and Wout Weghorst during training

That success means little to the Oranje's demanding fanbase.

'If I have to believe the Dutch media, we'll never become world champion,' Van Gaal said in Dutch. 'In 2014 it was exactly the same. Extremely negative. Now it's the same all over again. I am used to it, and I think my players are used to it, so we will calmly move on.'

Then he added playfully in English: 'Maybe you can take now a picture after this declaration.'

He smiled and said: 'Cheese.'

Van Gaal, who is out of contract after the World Cup, deflected questions about whether he would coach in Africa or replace Roberto Martinez, who parted ways with Belgium after his team was eliminated Thursday.

'You got to convince my wife,' he said.

A losing finalist in 1974, 1978 and 2010, Holland began this tournament with a 2-0 win over Senegal, tied Ecuador 1-1 and beat Qatar 2-0 to top Group A.

Gregg Berhalter (second row, center) played for Holland's Sparta Rotterdam  in the mid 1990s 

Van Gaal's team has been criticized at home for an alleged lack of attacking flair despite an 18-game unbeaten streak.

'I'm laughing because there's always criticism in the Netherlands. How many Bond (national team) coaches are there in the Netherlands? Sixteen million. Isn't that what they say? Seventeen million now?' Berhalter said. 'I think Louis van Gaal has tough enough skin. He realizes that his job is to deliver wins.'

The Americans have several Dutch ties. US sporting director Earnie Stewart grew up in Holland, as did current right back Sergiño Dest.

'It's going to be a pretty fun one, playing against the country I was born in,' Dest said. 'I know almost every single guy over there.'

Dest was teammates with the Dutch defender Daley Blind at Ajax before moving to Barcelona and then AC Milan.

'You could immediately see he was full of talent,' Blind said through a translator. 'He evolved really rapidly.'

Berhalter took a question in Dutch without translation. He left the University of North Carolina after his junior season to sign with Zwolle in 1994, switched to Sparta Rotterdam in 1996 and Cambuur Leeuwarden in 1998.

Gregg Berhalter (left) United States defender Sergino Dest (right) both have ties to Holland

Van Gaal claimed he didn't recall Sparta upsetting his Ajax team in 1997.

'Being that competitive, he has to remember that game,' Berhalter said, chuckling.

The US has played Holland five times, all friendlies The Americans lost four before rallying late for a 4-3 win in 2015. They have not reached the quarterfinals since 2002, losing round of 16 games in extra time to Ghana in 2010 and Belgium in 2014.

Berhalter was hired after the failure to qualify for the 2018 World Cup.

'What I observe is a vision,' Van Gaal said. 'What I see is a team that is keen to execute that vision, which is of the utmost importance, and I see the conviction, especially the conviction of the players. So that for a coach must be fantastic.'

Van Gaal's squad has been battling flu, much like the Americans last week. The US opened its campaign in Qatar with draws against Wales and England, then beat Iran 1-0 on a goal by Christian Pulisic, who bruised his pelvis but hopes to play Saturday.

The US has allowed only one goal at the World Cup. Berhalter credited a collective defense and recalled lessons and demanding teammates from his Dutch days.

'Just about spacing and the positional game, third man, triangles. There was a striker, an old striker that I played with when I first got there. His name was Remco Boere. He would yell at me for giving him the ball with too much spin,' Berhalter said. 'If you ever laid a ball off to someone and you put it to their wrong foot, they would start yelling.'