AJAX Amsterdam has refused to allow four of their African internationals to travel and join up with their national teams this week because they would have to quarantine on their return to the Netherlands, the club has confirmed. Ghana’s Mohammed Kudus, Moroccan pair Zakaria Labyad and Noussair Mazraoui, and Lassina Traore from Burkina Faso have not been released as Ajax have 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…