Liverpool midfielder Naby Keita is to miss training over the next couple of days because of a neck problem.
The £53m new arrival sat out the International Champions Cup win over Manchester City after reporting the issue and has now been sidelined from the squad's sessions as they prepare to face Manchester United in Michigan tomorrow.
"Naby Keita is set to sit out training for the next couple of days as a precautionary measure as he recovers from a sore neck," said a statement from Liverpool.
"Keita will be afforded time to recover by not taking part in the immediate sessions, although he has not been ruled out of the fixture with Manchester United in Michigan at this stage."
Manager Jurgen Klopp said there was "a lot of good moments and a lot of bad moments" as a Sadio Mane stoppage-time penalty helped the Reds to a 2-1 win over City.
Leroy Sane broke the stalemate at the MetLife Stadium in New Jersey on 57 minutes, but Mohamed Salah buried a header less than a minute after coming on to draw things level.
Neither Salah nor Mane were expected to feature in the clash, but the latter showed his worth by rolling a spot-kick past Joe Hart.
Klopp said: "The game for us was very important, but it is not a sign in the direction or whatever.
"It's only a game we played and a lot of good moments which we can use and a lot of bad moments we can work on. That's all."
The German added that he had no concerns over Salah's shoulder injury.
He said: "I was not concerned about it otherwise he wouldn't have played.
"He came in and scored after pretty much 35 seconds. He had a big impact together with Sadio and Dom (Salanke), and the midfield with Marko (Grujic), Pedro (Chirivella) and Ben (Woodburn) played fantastic."
Manchester City manager Pep Guardiola was upbeat about the display despite the end result.
He said: "It was incredible, what we did. For 75 minutes, it was incredible with the players we have what we did against that team - the finalists of the Champions League, who have amazing players."