Inaki Williams withdrew from Ghana duty this month due to injury.
Athletic Club contracted to the Ghana FA to inform them of a tendon injury picked up by Williams in training last week.
He missed the weekend's La Liga draw with Real Valladolid and the Black Stars have accepted the Athletic Club's medical update.
According to reports from MarcoAn agreement was reached to allow Williams to miss a flight to Accra, to have the injury evaluated by his national team.
Williams now remains in Bilbao to continue his recovery as part of a host of withdrawals from the Ghana squad over the past 24 hours.
Otto Addo's team faces two crucial games to try and save their chances of qualifying for AFCON 2025 against Angola and Niger.
Ghana need to win both games to have any chance of eliminating Angola and Sudan in the race to qualify for the tournament in Morocco in December next year.