All of Liverpool's summer internationals will be present for the first fixture of their tour of the United States later this month, manager Jürgen Klopp has revealed.

13 players were in action at the Copa America and Euro 2016 over the summer, with only Brazil's Philippe Coutinho having made his return thus far.

The attacking midfielder was an excellent impression upon his return at Wigan Athletic, twice hitting the woodwork and setting up an opportunity for winger Sadio Mane with a sublime piece of individual skill.

Eight changes after the break saw the Reds turn their control and dominance into a lead, goals from half-time substitutes Danny Ings and Ben Woodburn finding the scoresheet within three minutes of each other.

And in the aftermath, Klopp told reporters that he expects to have his full contingent available by July 26 - the day before they take on Premier League rivals Chelsea in the International Champions Cup in Pasadena's Rose Bowl.

England quartet Daniel Sturridge, Jordan Henderson, Nathaniel Clyne, James Milner and Adam Lallana will join up with the rest of the squad when they fly to California on Thursday.

Soon after, Belgium trio Simon Mignolet, Divock Origi and Christian Benteke will join them - with Joe Allen of Wales and Germany's Emre Can expected to follow them in the days after, given that their countries reached the semi-finals of the Euros in France.

All of them will be present by the time of their opening Stateside clash against Chelsea, though it is unlikely that those who join up just a few days earlier will play any part in the game.

Liverpool boss insists that "work starts again" once club's internationals return

"We've had three games [so far], but what is more important is the work between the games and so I am quite happy," Klopp declared after his side beat Wigan 2-0 at the DW Stadium on Sunday.

But he insisted he and his staff "will be even more happy" by the time they go to the USA and "all of the other players" join up with the first-team squad.

He explained that they will have "the big group together" by July 26, when "the last two players" - midfielders Allen and Can - will join their teammates.

Klopp, Alexander-Arnold and Woodburn clap the Liverpool fans after full-time at Wigan. (Picture: Getty Images)
Klopp, Alexander-Arnold and Woodburn clap the Liverpool fans after full-time at Wigan. (Picture: Getty Images)

The Reds boss added that "all the English players" are with them by the 21st, with the Belgian contingent due the following day on the 22nd.

Klopp insisted that then, they will have "a real group together" and said "the work starts again with them" as they hope to "build on the base we've done in the first three weeks with the other players."

Two of Reds' breakout youngsters being considered for place in America squad, admits Klopp

On whether the senior squad will be joined by any of the youngsters who have impressed for Liverpool throughout their first three games, Klopp said: "I think we'll take two of them, but [we've made] no final decision."

He insisted that it's "not about taking them" as he explained that "in the last few years in England, it's always a lot of youngsters in pre-season and everyone is excited about how good they are, then you never hear something about them."

Klopp argued that he "100 per cent" does not want "to do it like this" - insisting that they "see the qualities" and "want to improve these guys" and "develop them."

However, he warned that their development is not necessarily "about America" as he revealed that midfielder Ovie Ejaria, Trent Alexander-Arnold and Ben Woodburn - who scored his second pre-season goal in as many games - "are still in school."

He acknowledged that they are on their summer holidays "at the moment" but said they still "have a few other things to do" and suggested that they might not be able to visit America.

Liverpool have one more warm-up match on home soil, as Klopp goes head-to-head with close friend David Wagner, formerly of his backroom staff at Borussia Dortmund, when his side travel to Huddersfield Town on Wednesday night.

After the opening USA clash against Chelsea, the Reds take on Serie A sides AC Milan and AS Roma before a glamour friendly with Barcelona at Wembley Stadium in early August.

Their final game comes less than 24 hours after taking on La Liga champions Barca, with a trip to Klopp's former club Mainz just a week before the start of their league campaign.