Roberto Firmino and James Milner became the lastest Liverpool players to pick up injuries on Thursday night against Manchester City.
Firmino was due to start the game, but an impact injury to his calf, picked up in training, ruled him out. The former Hoffenheim man has since undergone a scan and the damage is not thought to be serious.
Milner, meanwhile, was withdrawn after 38 minutes of the Reds' fourth-round clash with Pep Guardiola's side at Etihad Stadium having pulled up. City went on to win the game 3-2. And here is the latest on the Reds' remaining injury issues.
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Diogo Jota
Like Diaz, the Portugal international is among Liverpool's long-term absentees after he pulled up during the closing stages of the 1-0 victory over City on October 16. Jota departed the field on a stretcher and was immediately ruled out of the World Cup by Klopp, who admitted his quest back to full fitness would be a "long time".
"[It's a] pretty serious injury in the calf muscle, and now the recovery process starts," said Klopp at the time. "We can say that because he will not be in for a long time; we talk about months."
Arthur Melo
Arthur Melo was included as part of Liverpool's 33-man squad for their mid-season training camp in Dubai, where he is continuing with his rehabilitation from a thigh injury he picked up in training in October.
At the time, it was expected that the Juventus loanee would be sidelined for up to four months and miss most of his temporary stay at Anfield. However, recent reports have claimed that the Brazilian is in fact ahead with his recovery following positive tests.
It has been claimed that he could be back in training at the end of December and therefore could make a return to action by the end of January.
Roberto Firmino
Liverpool were without Roberto Firmino for Thursday's trip to City after he suffered a calf injury earlier this week. The former Hoffenheim man has since undergone a scan and the damage is not thought to be serious.
Speaking before the fixture, Klopp told Sky Sports: "We play mainly with the players who could do all the sessions now and had a break – apart from Bobby, who unfortunately got injured two days ago in training.
"Not a big one but big enough for this period. That's why Darwin is now starting. He could've started anyway but Darwin is starting now."
Trent Alexander-Arnold
Jurgen Klopp also revealed after the game that Trent Alexander-Arnold missed the tie due to illness. He said: "We thought Trent was available but then he got ill, so that is what we have to wait for."
James Milner
The latest player to pick up a knock, speaking after the defeat to City at the Etihad, Klopp revealed he is optimistic the issue that forced Milner off is not serious.
He said: "Millie felt something in the hamstring. We still hope it is not an injury, but we will see. He felt something, but after 30 years in the business he said, 'I don't think it's a lot' so we will see."
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