Diafra Sakho faces a lengthy ban after Senegal football chiefs made a formal complaint to FIFA.
West Ham striker Sakho was absent from his homeland’s short-lived Africa Cup of Nations campaign, which ended on Tuesday with a group-stage exit, after suffering a back injury.
But Senegalese FA chiefs were furious that he was fit enough to play – and scored the winner – in Sunday’s FA Cup tie at Bristol City.
They have contacted world football’s governing body FIFA demanding action – and that could see him suspended from playing for West Ham at Liverpool on Saturday and in further games.
Although Senegal are out, FIFA have the power to stop Sakho appearing for his club for the duration of the tournament in Equatorial Guinea – which ends on February 8 – but they could impose an even longer ban and a heavy fine.
A FIFA spokesman told Mirror Sport on Tuesday night: “We can confirm that we have been contacted by the Senegal FA concerning this matter. The matter is now pending with our services. We cannot comment further at this stage.”
FIFA will investigate and pass on their findings to the Football Association, who are aware of the complaint.
Senegal FA general secretary Victor Cisse was contacted by Mirror Sport on Tuesday, and the organisation is considering its next step.
Sakho tweeted his anger over the row on Monday after an anti-West Ham campaign was launched on social media in Senegal.
Senegal’s head coach Alain Giresse said after Sakho’s FA Cup winner on Sunday it “set a dangerous precedent” that West Ham could claim he couldn’t fly to matches but could take part in them.
Giresse added: “When you cannot fly for six weeks and then suddenly you’re playing a football game, there must be miraculous medicine in England.”Watch The Premier League Live!! with EXPRESSVPN the #1 Trusted Name in VPN