Liverpool goalkeeper Alisson Becker is a doubt for Saturday's game against Bournemouth.
The Brazilian shot-stopper, who has kept three clean sheets in five games, is struggling with a muscle issue and did not train on Thursday.
Caoimhin Kelleher, who is yet to feature this season, is set to deputise in his place.
Manager Arne Slot said: "Alisson is still a doubt if he can train today, so let’s wait to see if he can train. Then, if he can’t then he will probably will not play as well, so we have to wait and see.
"He has a slight issue with one of his muscles. We wonder if this game tomorrow is coming too early or not. He didn't do it in the Milan game, it happened a bit before. After the Milan game, he felt it more and more.
"Now we have to wait and see if he's ready to be in goal tomorrow or if we have to wait a few more extra days."
Harvey Elliott remains sidelined with a foot injury.
Slot on Nunez: He will get his chance
Slot says Darwin Nunez will get his chance to prove himself as Liverpool's starting forward amid a run of five games in 14 days.
The Uruguayan forward, who has not scored for the club since early April, is yet to start a game under the new manager and has been restricted to 84 minutes across all competitions.
He is the only Liverpool attacker - barring new signing Federico Chiesa - without a goal contribution.
But with a frantic schedule forthcoming, Slot insists Nunez, who made his 100th appearance for the club against AC Milan on Tuesday, will get more minutes.
Asked what he has to do to regain his place in the first team, the Dutchman said: "Same like all the others: work really hard and the goals will come. That's what he did when he came in against AC Milan.
“First of all, you come in for the team. And then as a result of that, attackers score goals or assist.
“That’s also what happened to Cody, but it happened before with Lucho and with Mo and with Diogo. If you play in a team like Liverpool, you will always score your goals or get your assists.
“For me, it’s mainly about the work we do without the ball, and that they can score goals and that they can assist I know, and that’s the same with Darwin.
“He will get his chance in the near future, we play a lot of games and I think he’s fitter and fitter now, understands day by day better what we expect from him. But he's in competition with Diogo who, in my opinion, has done really well in the last games."
Slot denied Nunez is lacking confidence. He added: "No. I think he came back with a lot of confidence from Copa America, he scored some good goals.
“Darwin always has confidence and he has every right to have this confidence, because everywhere he played he always scored goals.
“As a striker, sometimes you have a few games that you don’t score and all of a sudden you score a lot.
“As long as he brings his work rate in for the team and we bring him enough in positions, I’m 100 percent sure he or Diogo or one of the others will score his goals.”
