The ERC have received a citing complaint against Blues Flanker Martyn Williams, following the Round 1 Heineken Cup match against Edinburgh.
Williams, who this summer picked up the ERC European Fair Play Award, is alleged to have dropped his knee into the face of Edinburgh full back, Chris Paterson, during the first-half.
The hearing will take place in Dublin this Wednesday.
Law 10.4(a) 'A player must not strike an opponent with the knee(s)'.
IRB recommended sanction - Low End: 3 weeks; Mid Range: 8 weeks: Top End: 12+ weeks; Maximum: 52 weeks
Judgement Day is back at the Millennium Stadium for 2015 with the Welsh Rugby Union (WRU) and Regions confirming today that tickets will cost just £10 per head to see all four of Wales' GUINNESS PRO12 sides in action under one roof.
Battling Cardiff Blues produce a performance of full pride and heart in adversity as they lost out to reigning champions Leinster Rugby in a pulsating Guinness PRO12 encounter at BT Sport Cardiff Arms Park.
Cory Allen scored the only try of the game as Cardiff Blues edged an absorbing and dramatic Welsh derby with Newport Gwent Dragons at Rodney Parade to open 2015 in the Guinness PRO12 with a crucial victory.