Liverpool striker Diogo Jota was ruled out of the FA Community Shield against Manchester City later this month due to a recurring hamstring problem.
The Portugal international now faces a race against time to be fit for the Reds’ Premier League opener at Fulham on August 6.
Manager Jurgen Klopp believes goalkeeper Alisson Becker, who also missed the 2-0 friendly win over Crystal Palace in Singapore on Friday as a precaution, will be ready for the game against City at Leicester’s King Power Stadium on July 30.
Klopp has another injury problem after Alex Oxlade-Chamberlain was sent off with a hamstring problem during the latter stages of the friendly.
“Ali, I think, has a chance for City and not Diogo,” Klopp said in his post-match press conference.
“Ali, he feels a muscle, an abdomen. It’s nothing serious but, again, we’re preparing a full season so that he can train but just not like before, so he shouldn’t be playing at the moment.
“It’s not normal goalkeeper training, but he has pre-season, so he’s wasting no time.”
On Oxlade-Chamberlain, Klopp added: “Of course it’s very disappointing for us because Oxlade have been training very well all the time since the start of pre-season.
“It’s obviously happened with Ox in the past when it gets more intense and something can happen.
“Now it’s just a matter of muscle, we’ve had worse situations so I’m ok with that.
“I don’t know exactly how long it will take, but he will come back and everything will be fine. He is obviously a top player and he can help us.