"It was really unlucky. Bad news. High grade abductor injury. The tendon is ruptured," said Liverpool manager Juergen Klopp.
"It will keep him out for at least two months. Bad news for us and for Guinea with the Africa Cup of Nations coming up. Not nice," he said.
Liverpool travel to Newcastle United on Saturday as they trail Premier League leaders Manchester City by a point with two games remaining.
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(Reporting by Simon Evans; Editing by Mark Heinrich)
