Panthers centre Stephen Crichton is set to be suspended as one of four Penrith players charged following the defeat to Melbourne Storm.
The NRL Match Review Committee handed Crichton a grade one contrary conduct charge for contact on Cameron Munster in the 79th minute of Sunday's game.
Due to two previous grade one charges, Crichton faces a one-match suspension regardless of whether he takes the early guilty plea or is found guilty at NRL Judiciary.
Fellow Panthers Jarome Luai (18th minute) and J'maine Hopgood (37th minute) have been handed grade one careless high tackle charges, while Kurt Capewell (55th minute) copped a grade one dangerous contact charge.
The trio face monetary penalties only and will be free to face Sydney Roosters on Saturday.