Goalkeeper Alisson Becker had to be helped off in the first half of Liverpool’s opening Premier League game of the season against Norwich due to injury.
Liverpool were up 3-0 when Alisson went down after his left leg buckled as he prepared to take a 36th-minute goal kick.
The Brazil international was replaced by new signing Adrian, who joined from West Ham at the end of last season.
Liverpool would have to wait to know if Alisson will be fit for the European Super Cup final against Chelsea in Istanbul next Wednesday.
Liverpool visits Southampton for their next Premier League game on August 17.