Samoan rugby centre Eliota Fuimaono-Sapolu has been ordered to appear before England's RFU disciplinary panel after being hit with three charges of conduct prejudicial to the interests of the game.
The outspoken Gloucester star will appear before officials on Monday to explain a series of remarks made on social networking site Twitter this week.
It comes after the 31-year-old international was handed a six-month suspended ban by the International Rugby Board during the World Cup for accusing Welsh referee Nigel Owens of bias.
In the latest incident, Fuimaono-Sapolu is accused of making derogatory remarks on Twitter about Saracens centre Owen Farrell, while criticising rugby's disciplinary process, the World Cup and IRB.
If found guilty, it could lead to the IRB activating the centre's six-month suspended ban.