Naby Keita has left Guinea's Africa Cup of Nations camp to return to Liverpool for assessment on an injury.
Keita missed the last month of the Reds' Champions League-winning season with a groin injury sustained against Barcelona, but was still named as captain in Guinea's AFCON squad.
The 24-year-old came on as a substitute in the opening Group B clash with Madagascar, before starting in the 1-0 defeat to Nigeria.
However, he was taken off during the second half having suffered a number of knocks following several robust challenges.
And Guinea have confirmed their star player has returned to Merseyside to consult with his club's doctors, though it is planned he will head back to Egypt on Wednesday.
June 30, 2019
"Yes, he has gone for a medical consultation [at Liverpool]," Mamadou Camara, Guinea's press officer, told BBC Sport.
"As you know he was the victim of a lot of heavy challenges in the game against Nigeria. He consulted with medical staff [at Liverpool] and they asked him to come back for two days. The idea is that he is here to play in the last 16 but I don't think we can say he will 100 per cent [return]."
Guinea's 2-0 win over Burundi on Sunday sent them through as one of the best ranked third-placed sides and they will face the winners of Group D in the last 16.