Jurgen Klopp says he has three options to fill in at centre-back after Liverpool lost Fabinho to injury.
The Brazil international, who slotted into the defence to cover for the injured Virgil van Dijk, limped off in the first-half of Tuesday's Champions League win against Midtjylland on Tuesday.
Rhys Williams, 19, replaced the 27-year-old and impressed the Reds boss as his side ran out 2-0 winners at Anfield.
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However Klopp insists the England Under-19 international is not the only one who can be trusted to partner Joe Gomez at the heart of the back line, with 23-year-old Nathaniel Phillips and Billy Koumetio, 17, also available.