Newly-promoted side Fulham will be guests to defending champions Manchester City at the Etihad.
The England captain also appeared to labour through the first few games of the new season, even though he scored two goals in four games.
The Liverpool boss revealed that the issue is nothing serious and while Lallana is expected to miss the upcoming matches against Tottenham, Paris Saint-Germain and Southampton, Klopp hopes to have him back the following week.
The Crystal Palace legend said there was room to improve for Liverpool but they now had a strong defence to back up their already impressive forward line. They were the most stable players in the squad. "As a United fan, that's a worry because it is still that mentality of "anyone but them".
"For me, Liverpool are one of the best teams in Europe, not only in England".
'I don't know what he means with that, to be honest.
"Now he is going to do another scan to try and see how much he is injured", Pochettino added.
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All four semifinalists were past finalists at Flushing Meadows, the first time that's happened at the U.S. Woods finished sixth at the British Open, and has battled back from injuries and personal problems.
The Toffees are one of the unbeaten sides this season but their star man Richarlison will not be available because of suspension.
"How would that work?"
"It was a very hard game for us because we made big mistakes around their goals", said Klopp.
The North London outfit will first face Liverpool at the Wembley Stadium in the Premier League on Saturday afternoon.
"Then like always I told you, I never talk about situations, that maybe yes or maybe no, the club is dealing or working".
"How do you prepare for a game and not focus on it?" We don't play Champions League or what? That would be amusing. To focus on one competition can only be if you are out, or almost out, or of if it's late in the season.
"I think Liverpool haven't started the season excellently, but they have done a good job, and out of all the teams out there they've looked the best, and in [Virgil] van Dijk they've got one of the best defenders in the world at the moment".
The former Manchester United skipper's advice has been a big talking point, with Klopp himself dismissing the generous advice.