Ayew did not arrive with the team for the training session after picking up injury in Ghana’s narrow defeat to Morocco on Monday.
The 32-year-old forward’s failure to train with the team raises concerns about his availability for Ghana’s crucial Group C game with Gabon at the Stade Ahmadou Ahidjo in Yaoundé on Friday.
Coach Milovan Rajevac had the rest of his players available for the training session with the exception of yet-to-return Ayax star Mohammed Kudus.