Pritchard has been cited by the judicial committee for kneeing St George Illawarra five-eighth Gareth Widdop in Saturday night's 11-10 elimination final win.
Canterbury forward Frank Pritchard. Photo: Photosport
Pritchard, who has signed with English club Hull in the Super League for next season, faces a one-match suspension unless he successfully challenges the charge.
A guilty finding would rule Pritchard out of Friday night's prelimenary semifinal against Sydney Roosters.