Liverpool medical team will monitor midfielder James Milner over the coming days, the club's official website has confirmed.
Reds vice-captain complained of pain in his quad during the Premier League Asia Trophy final against Leicester City, and he was substituted in the first half of the game.
The report claims that the initial diagnosis suggests that the problem is not serious, but Milner would still need to undergo a specific training programme.
The Reds will continue their pre-season preparation with a friendly against Hertha Berlin on Saturday.