Henco Venter is a doubt for Glasgow Warriors' Champions Cup quarter-final at Leinster on Friday after being cited for alleged eye-gouging against Leicester Tigers.
The experienced South African loose forward scored two tries in the 43-19 win over Leicester at Scotstoun on Saturday in a player-of-the-match display.
The complaint suggests Venter made the illegal contact with Dan Cole in the second minute of the match just before the visitors scored the opening try.
No action was taken at the time.
Glasgow attack coach Nigel Carolan called Venter "a gentleman", insisting "whatever happened was an accident".
On the prospect of losing a key player for such an important game in Dublin, Carolan added: "It would be unfortunate because he's such a good-natured person. It's not in his intention to hurt anyone or to cause harm, especially with all the cameras that are around. It's kind of silly, but it was just unfortunate and something that we'll just have to deal with."
