France U20 prop Rabah Slimani reportedly tested positive for a banned substance during the recent Junior World championships in Wales.
According to French daily Midi Olympique Slimani tested positive after using a nasal spray to treat a cold.
The spray in question is said to have been added to the list of banned products in January 2008. The French Rugby Federation and Stade Français are set to join forces to clear the 19-year-old prop of any wrong doing.
Slimani is already serving a 13-week suspension for his role in the unsightly brawl that broke out between the French and Welsh team during the tournament in June. If found guilty of doping, he could be slapped with a six-month ban.