Liverpool have refused to allow Mohamed Salah to travel to Africa for next month's World Cup qualifiers with Egypt because he would be forced to quarantine on his return to England, the Egyptian Football Association (EFA) said on Monday.

It opens up the possibility of similar refusals from other European clubs ahead of next month's World Cup qualifiers in Africa, Asia, the Concacaf region, Europe and South America, and puts them on a potential collision course with Fifa.