Liverpool kicked-off the new season of the Premier League with a 4-1 victory over Norwich City.
However, the Reds' first game came with an injury as goalkeeper Alisson Becker was replaced by the newcomer Adrian in the 39th minute.
Alisson suffered a calf injury and Jurgen Klopp has confirmed that the goalkeeper will be out for "the next few weeks" including the UEFA Super Cup game against Chelsea on Wednesday.
“[It’s] Not too cool. It’s a calf injury which takes him obviously out for a while,” Klopp told Liverpoolfc.com.
“I don’t want to make now [an] exact prognosis on when he will be back but it will not tomorrow 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.
“I saw already like ‘six weeks’ and stuff like this, but Ali was not a lot injured in his career so I would like to wait a little bit to see how he develops in that process now, but he is not in for the next few weeks.”