Liverpool coach Jurgen Klopp has confirmed goalkeeper Alisson has been ruled out “for the next few weeks” with a calf injury suffered in the season opener against Norwich.

The Brazilian, 26, was subbed off after 39 minutes in the 4-1 victory and new signing Adrian took his place.

“It’s not too cool. It’s a calf injury which takes Alisson out for a while,”said Klopp on the club’s official website.

“I don’t want to make now an exact prognosis on when he will be back – it takes a couple weeks for sure, and we have to see.”

With no cover for Adrian as third choice Caoimhin Kelleher is yet to fully recover from a broken wrist, Liverpool are set to sign veteran Andy Lonergan on a short-term deal.

The 35-year-old is available on a free transfer having left Middlesbrough in the summer.

“We have to find a solution in the short term and that will be, if nothing happens from now to then, Andy Lonergan.

“He was in with us, he’s a brilliant character, a really nice lad and helped us a lot in the pre-season and now we decided to work together with him,” said Klopp.

Lonergan is expected to be on the bench for the Super Cup match against Chelsea in Istanbul on Wednesday.