FIFPRO wants an urgent investigation into controversial medical treatment given to players in Cyprus.
Reports from the country claim three players have been forced to retire after being given injections containing unknown substances.
Getty – Contributor3 At least four clubs are alleged to have used the unnamed substance to aid recovery
At least four clubs are alleged to have administered the treatment – leading the footballers' union to call for action.
A statement read: “Because of concerns there is a link between the unidentified substances and the serious heart condition of the three players, Fifpro is calling for football authorities to help identify what was administered to them and to establish if their team-mates are in danger.”
Fifpro added that the Cyprus Football Association, Cyprus Sports Organisation and Uefa have been contacted to raise the issue.
It has been suggested the injections were used to help players recover since the start of last season.
Keith Campbell – The Sun Glasgow3 Cypriot football is known for its fanatical fans
Keith Campbell – The Sun Glasgow3 There is usually a hostile atmosphere when British clubs head to Cyprus in European competition
The three players who have quit football on medical advice are being supported by FifPro and the Cypriot players union.
But there are concerns about players who have left the clubs in question to continue their careers elsewhere, including some who have moved abroad.
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