Liverpool goalkeeper Alisson Becker was on Monday ruled out for "the next few weeks" by coach Jurgen Klopp after suffering a calf injury in their 4-1 win over Norwich.
Brazil international Alisson limped off in the first half of Liverpool's Premier League opener at Anfield on Friday.
"Not too cool. It's a calf injury which takes him obviously out for a while," Klopp told Liverpool's website.
"I don't want to make now an exact prognosis on when he will be back but it will not be Wednesday for sure, so now then we have to see. It takes a while, it takes a couple weeks for sure, and we have to see".
Alisson, 26, was replaced by experienced Spaniard Adrian against Norwich. The former West Ham keeper, who joined on a free transfer last week, will keep his place for Liverpool's European Super Cup.