Liverpool will soon learn the extent of Fabinho's injury after the Brazilian pulled a hamstring in last night's Champions League win over Midtjylland (PR: Mitchel-land).
Diogo Jota and Mo Salah scored the goals in the 2-0 win in Group D at Anfield.
Teenager Rhys Williams replaced Fabinho in the team last night.
Reds boss Jurgen Klopp has backed Williams to make an impact if he earns an extended run in the starting 11.
In Group C, Manchester City were comfortable 3-0 winners away to Marseille.