Vito Kolelishvili could be cited after he was penalised for pushing referee Wayne Barnes in Clermont's loss to the Ospreys.
The Georgia openside wasn't carded by Barnes at the time but was later sin-binned after he was involved in a scrap with Ospreys lock Alun Wyn Jones.
Ben Tameifuna was suspended for five weeks for pushing referee Glen Jackson whilst playing for Waikato, while England prop Kieran Brookes received a six-week ban for a similar incident involving Greg Garner. Both incidents happened in 2014.
Watch the video below: