Liverpool boss Jurgen Klopp has revealed the injury Divock Origi suffered in Wednesday night's Merseyside derby IS serious - but doesn't necessarily believe his season is over.
There was immediate worry for the in-form Belgian striker after he was caught late by a horror, studs-up challenge from Everton defender Ramiro Funes Mori.
The centre-back was given his marching orders for the tackle, while Origi left the pitch on a stretcher.
He has suffered ligament damage in his ankle, with reports in his native Belgium suggesting he could be facing six weeks on the sidelines.
“It’s serious,” Klopp said at his pre-match press conference ahead of Newcastle's trip to Anfield this weekend.
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“What can I say? We will try everything but... We just have to work with him and see what happens.
“I did my ACL and played after four months. No one could believe it.”
Tomorrow's fixture will see former Reds boss Rafael Benitez return to Liverpool with the Magpies, and Klopp has told fans they are 'more than welcome' to celebrate the 2005 Champions League triumph in Istanbul.
"That's how I'd welcome an old friend," he added.
On the match, Klopp said: “We know about the physical strength of Newcastle. They have a strong team.
“They don’t look like a relegation team. Only one of them, Sunderland and Norwich can stay up.”
“We need a team who are really fit for this game.
“Four wins in a row means nothing for the next game. That’s just a number.”