Castres scrum-half Rory Kockott and replacement Marc-Antoine Rallier will face an independent disciplinary hearing after the duo were cited by EPCR following the recently concluded Champions Cup game against Munster on Saturday.
The game at Stade Pierre Fabre saw both the players yellow-carded and despite the setback the French side went on to win 13-12 to keep their play-off hopes alive.
Kockott is alleged to have made contact with eye of Munster flanker Chris Cloete that saw him sin-binned at the end of the first half which is a breach of law 9.12.
Meanwhile, Rallier was yellow-carded in the 70th minute for a dangerous tackle on Peter O’Mahony and was charged with a breach of law 9.13.
Munster head coach Johann van Graan stated that he will contact the authorities seeking a clarification on the incidents during the course of the game.
"There is a process in place," he said. "We do the same each week, whether it is Pro14 or Europe, you follow due process. You get answers to your questions. For us it is about clarity.
"Obviously there were a few things that happened on the field of play… we just want some clarity on those.
"It’s important that we keep up the values of the game. There have been quite a few opinions on that, but we’ll move on."