Cameroon lead Africa Cup of Nations Group A after beating Guinea-Bissau 2-1, while hosts Gabon drew with Burkina Faso.
Jurgen Klopp says he would pick Joel Matip in his Liverpool team on Wednesday but for a FIFA ruling that defies "human sense".
Burkina Faso fought back to earn a 1-1 draw from their opening Group A match against Cameroon at the 2017 African Nations Cup.
Liverpool could be without Joel Matip for the duration of the Africa Cup of Nations unless Cameroon allow him to play for the club, says FIFA.
West Brom's Allan Nyom and Liverpool's Joel Matip have been left out of Cameroon's Africa Nations Cup squad.
Liverpool defender Joel Matip has turned down the chance to resurrect his international career with Cameroon.