Former All Black Ali Williams has been summoned to appear before a French Top 14 disciplinary commission on March 29, after being arrested on drugs charges last month.
Williams has been charged with buying cocaine and former Australian international James O'Connor with possession, after they were detained by police two weeks ago outside a nightclub.
The NZ lock has admitted the accusations and now faces the French judicial process to determine his future.
But the French National Rugby League (LNR), which runs the national competition, is also pursuing the case, last week confirming that president Paul Goze had filed an official complaint.
The LNR today confirmed a hearing date later this month.