Toulon full-back Delon Armitage has been cited following an alleged tip-tackle in their Heineken Cup Pool 6 defeat to Montpellier last weekend.
Armitage was yellow-carded by Alain Rolland for the first-half incident and was subsequently reported by the match citing commissioner.
He will now face a disciplinary hearing in Dublin on Thursday. The range of punishments for tip tackles vary between four weeks at the low end to a top end punishment of 52 weeks.
European Rugby Cup also announced that Rovigo forward Jean Francois Montauriol had been cited for allegedly stamping or trampling on Perpignan lock Guillaume Vilaceca in last Thursday's Amlin Challenge Cup encounter.
Racing Metro flanker Antoine Battut, meanwhile, will face a disciplinary hearing on Thursday following his sending off for striking a Munster player with his knee in Limerick on Sunday.
And Rovigo centre Joe van Niekerk will join his team-mate Montauriol on Thursday after being red-carded following an alleged tip tackle in that 40-22 defeat to Perpignan.