Arne Slot confirmed Alisson is set for a spell on the sidelines after being forced off injured late in Liverpool s 1-0 win over Crystal Palace on Saturday.
Diogo Jota scored the only goal nine minutes in after Eddie Nketiah had a goal disallowed in the first minute for offside.
Palace attempted to find a late equaliser, but amid their flurry of chances, Alisson went down after a routine clearance holding his right leg.
Having only just returned from a thigh injury, it is a worrying sign for the Brazilian, with big games against Chelsea and Arsenal coming up.
And though Slot was pleased to get the win that secured their stay at the top of the table over the international break, he confirmed it was unlikely Alisson would be available for their next games.