Sale and England wing Denny Solomona has been charged after allegedly verbally abusing a Worcester player in the Sharks’ win on Saturday.
The television microphones picked up Jamie Shillcock making the complaint in the 55th minute of the Premiership match.
Reports following the game suggested the scrum-halve’s complaint related to a “homophobic slur”.
Solomona, 24, has been charged with “conduct prejudicial to the interests of the union or the game”.
He will face a disciplinary panel on Thursday, 5 April and faces a minimum suspension of six weeks if found guilty.
Both Sale director of rugby Steve Diamond and Worcester counterpart Alan Solomons said after the game that they had not seen or heard the incident.
In January, France centre Mathieu Bastareaud was banned for three weeksafter making a homophobic comment during a game, with his six-week punishment halved because of his guilty plea.