Spencer Leniu has accepted a two-game suspension for a gesture made during Samoa's World Cup semi-final defeat to Australia.
The Parramatta recruit, a four-time premiership-winning prop, was sin-binned by referee Adam Gee for dissent. His money gesture was interpreted as questioning the referee's integrity.
The NRL integrity unit is also examining an alleged post-match incident involving Leniu at Allianz Stadium in Sydney.
He is accused of abusing an NRL official outside Samoa's dressing rooms after trying to bring in friends who lacked the required accreditation.
Leniu reportedly blasted the official when the friends were initially refused entry.