Liverpool manager Jurgen Klopp could be without Adrian for Saturday's Premier League game away to Southampton.
The Spaniard has a swollen ankle he suffered during the post-match celebrations after Liverpool's UEFA Super Cup win over Chelsea on Wednesday night.
Speaking at his pre-match press conference Klopp said: "A supporter jumped over something, slipped and kicked his ankle. It is swollen but we have to see."
First-choice keeper Alisson has already been ruled out for at least four weeks due to a calf injury so Klopp could be left with a choice of veteran Andy Lonergan or Republic of Ireland Under 21 international Caoimhin Kelleher.
35-year-old Lonergan only joined the club recently on a one-year deal and despite more than 400 senior appearances over his career, he has never played a game in the Premier League.
Corkman Kelleher is recovering from a wrist injury that kept him out of the pre-season.
Klopp said: "Caoimhin is a boy we are all excited about. He's now in training, but not 100 percent yet. He has to be in training today, then we will see."