JacknDanny

Assaults committed on sports fields are subject to the law, as I recall Duncan Ferguson was jailed in Scotland for an assault he committed during a game. It would seem to be under the jurisdiction of Manchester Police, if charges are brought against Barton, as the incident happened in their area.
What concerns me, as a football fan, is Barton's claim that a fellow team member advised him to try and take a City player with him, once he had been shown the red card, which Barton claimed, was the reason he assaulted Aguero and other City players. For me, this type of behaviour must be stopped, before it becomes commonplace. The FA must investigate this, and demand that Barton names the player who said this, and then takes action against that player. It may be that Barton is either lying or trying to avoid taking the blame, but an investigation must get to the truth of this matter.
As I understand it, a red card has several possible options:- the recipient is banned for several games, or can appeal and possibly have the red card decision overturned, or have the ban reduced, (as happened with Wayne Rooney for England).
It may be time to introduce other options to this, for example if a player acts in a similar way to Barton, assaulting other players while leaving the field of play,then an additional ban is introduced, for 5 games, and that ban cannot be contested.
QPR should sack him, and put an end to his antics, once and for all.