Dan Carter has allegedly tested positive for steroid use following the French Top 14 rugby union final match between Toulon and Racing 92.
The New Zealand legend will now have to battle to clear his name after his representatives claimed that he had the required Therapeutic Use Exemption (TUE) to use corticoids to treat a calf injury suffered before the final last season.
According to French newspaper L’Equipe, two of Carter's Racing 92 teammates, Juan Imhoff and Joe Rokocoko, were also found to have 'anomalies' in their urine tests following the clubs 29-21 win against Toulon in French rugby's showpiece game.
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Carter's agent Dean Hegan told the Sun that he is remaining calm over the situation, as he's confident that the club submitted all the relevant paperwork to use the medicine.
He said: "We have been aware of the issue for a few weeks.
"Our understanding and assurances we’ve had are all the documents around TUEs were in place."
Should the club be able to confirm that they submitted all the paperwork, the players will be cleared of any wrongdoing, as having a TUE allows athletes to take banned substances for verified medical needs after being signed off by the necessary sports federations.
French drug officials have 40 days to reach a verdict on the matter.
Carter is regarded as one of the sport's greatest ever players and captained his country to World Cup glory in 2015, and a failed drugs test without TUE clearance will surely tarnish his reputation after a sparkling career.
Carter becomes just another sporting name to get dragged into drug leaks, following the likes of Bradley Wiggins, Chris Froome, Mo Farah, and Simone Biles.