Ajax Amsterdam officials confirmed on Wednesday they have refused to allow four of their African internationals to travel and join up with their national teams this week.
The club said it took the decision because the players would have to quarantine on their return to the Netherlands.
Ghana’s Mohammed Kudus, Moroccan pair Zakaria Labyad and Noussair Mazraoui, and Lassina Traore from Burkina Faso have not been released by the Dutch club.
Ajax had made use of a FIFA ruling that allows clubs to refuse to release their players this month if they face a period of quarantine or self-isolation on their return.
Usually, players must be released if called up for international duty during the FIFA window. But world football’s governing body FIFA announced a relaxation last week amid a spike in COVID-19 infections in recent weeks.
Morocco and Ghana’s football associations also confirmed the absences.
Kudus, who Ajax recently signed from Nordsjaelland in Denmark, was expected to join up with Ghana for two internationals against Mali and Iran, to be played in Turkey.
Morocco hosts Senegal and the Democratic Republic of Congo at home.
Burkina Faso plays the Congolese on Friday and Madagascar next week, also in Morocco.
Ajax’s Cameroon goalkeeper Andre Onana has joined up with his national side, which plays Japan in Utrecht on Friday.