Wales scrum-half Mike Phillips must explain to the board of his club Bayonne why he attended a video analysis session while allegedly drunk.
The Top 14 outfit have confirmed that Phillips faces an internal disciplinary hearing on Tuesday along with team-mates Dwayne Haare and Stephen Brett.
A Bayonne spokesman stated that Phillips was apparently intoxicated when the squad met on October 11, the morning after Grenoble had been defeated 37-6 in the Amlin Challenge Cup.
"We will speak to Phillips, Haare and Brett about their behaviour after that game. We will communicate the verdict on Tuesday," the spokesman said.
Phillips, who was dropped for Thursday's defeat by Wasps, has a chequered disciplinary record.
He was fined and suspended for 10 days by relegation-threatened Bayonne for an off-field incident last year and was banned by Wales in 2011 following a confrontation with a doorman in Cardiff.
Phillips, capped 77 times and a veteran of the 2008 and 2012 Grand Slam triumphs, was a central figure during the British and Irish Lions' series victory over Australia last summer.
The 31-year-old left the Ospreys for Bayonne in 2011 and his contract expires at the end of the season.