The Reds fly out to America on Tuesday ahead of three friendlies; against Borussia Dortmund, Sevilla and Sporting CP, as they step up their preparations for 2019/20.
Having taken on Tranmere (League One) and Bradford (League Two) in their domestic warmup games last week, Liverpool are set for a much bigger test against sides from the Bundesliga, La Liga and the Primeira Liga.
The quality of Klopp’s squad is set to increase, too, as a host of key players yet to feature this summer have been included in the group heading across the Atlantic.
Sixteen-year-old goalkeeper Jakub Ojrzynski travels, and is set to be joined by free agent Andy Lonergan in training, while Sepp van den Berg could make his first appearance since arriving from PEC Zwolle.
Liverpool first take on Dortmund in Notre Dame (July 19 local; July 20 BST), then Sevilla in Boston (July 21) and finally Sporting in New York (July 24 local; July 25 BST).
After that, they return for a friendly against Napoli in Edinburgh (July 28), before a short training camp in Evian which will see them make the trip to Geneva to play Lyon (July 31).
Liverpool’s Travelling Squad for US Tour
Goalkeepers: Mignolet, Atherton, Ojrzynski
Defenders: Van Dijk, Gomez, Matip, Lovren, Van den Berg, Phillips, Alexander-Arnold, Robertson, Hoever, Clyne, Lewis, Larouci
Midfielders: Fabinho, Henderson, Wijnaldum, Oxlade-Chamberlain, Milner, Lallana, Jones, Woodburn
Forwards: Origi, Brewster, Wilson, Kent, Duncan
Not involved: Keita, Shaqiri, Alisson, Firmino, Salah, Mane