Cardiff Blues captain Matthew Rees will appear at a disciplinary hearing in London tomorrow following his red card for stamping on Nick Easter.
The incident happened last Thursday when Harlequins travelled to Cardiff in the second round of the Challenge Cup.
Hooker Rees was shown a straight red card on the 73rd minute by referee Alexandre Ruiz and could be hit by lengthy ban.
France flanker Bernard Le Roux will also be in London for a hearing tomorrow as he, too, was sent off last weekend for stamping.
The South-African born openside was dismissed on the 43rd minute of Racing 92‘s clash against the Scarlets for stamping on looshead Phil John.