Liverpool midfielder Dominik Szoboszlai will miss the FA Cup third-round match at Arsenal on Sunday because of a hamstring injury.
The 23-year-old Hungary international suffered the blow in Monday's 4-2 win against Newcastle United and came off after 64 minutes.
"I can confirm it's not a potential injury - it is an injury," Liverpool manager Jurgen Klopp said on Friday.
"Muscle, hamstring. But now we have to see."
Szoboszlai will also miss the first leg of the Carabao Cup semi-final against Fulham on Wednesday.
"Dom is very positive, doesn't have a lot of pain, but we have to wait a little bit," added Klopp.