The FA admits they're working in "uncharted territory" over Newcastle United boss Alan Pardew's clash with Hull City's David Meyler.
Pardew faces a minimum five-game stadium ban for head-butting Meyler in Saturday's extraordinary touchline bust-up.
The Daily Express says an FA source yesterday admitted Pardew's offence was "uncharted territory" for the game's governing body, but for an offence as serious as this they will consider a lengthy suspension.
The FA source described Pardew's actions yesterday as "clearly very serious", but there are no similar incidents for them to use as a barometer for the length of their punishment, although former England skipper Paul Ince was handed a five-game stadium ban for violently pushing an official in October.
