Liverpool will discover the full extent of Philippe Coutinho's injury when he undergoes a scan on Monday afternoon, a source has told ESPN FC.
Coutinho, 24, was carried off on a stretcher in the 34th minute of the Reds' 2-0 win over Sunderland at Anfield on Saturday afternoon.
The Brazil international was challenged by Didier Ndong and immediately called for the attention of the medical staff before he was taken off.
A source told ESPN FC that the "likelihood" of Coutinho's injury is ankle ligament damage and that he was present at the club's training ground Melwood on Sunday on crutches with his right foot in a protective boot.