Liverpool forward Roberto Firmino is doubtful for the visit of Watford but has not yet been ruled out by manager Jurgen Klopp.
The Brazil international was forced off in the first half of Sunday's goalless draw at Manchester United after rolling his right ankle and - while the injury is not as serious as first feared - he appears unlikely to feature at Anfield.
Midfielder Naby Keita has recovered from illness and trained on Tuesday but defender Dejan Lovren (hamstring) is not yet ready to return.
Meanwhile, Watford head coach Javi Gracia has no fresh injury concerns.
Gracia may well stick with the side that thrashed Cardiff 5-1 on Friday, with only Kiko Femenia missing out.
The full-back has returned to training following a hamstring injury but the trip to Anfield comes too soon.
Liverpool vs Watford line-ups: Predicted XIs
Liverpool XI: Alisson, Milner, Matip, Van Dijk, Robertson, Henderson, Wijnaldum, Fabinho, Salah, Sturridge, Mane
Watford XI: Foster, Janmaat, Mariappa, Cathcart, Masina, Doucoure, Capoue, Hughes, Pereyra, Deulofeu, Deeney
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