World Cup final referee admits he made a mistake during Argentina vs France .
Petition going around France to have final replayed .
Two Argentina substitutes were on the field of play when Messi put the ball past France captain Hugo Lloris in the 108th minute .
French media have also pointed towards the rules of the game which, according to the FA, state: "If, after a goal is scored, the referee realises, before play restarts, an extra person was on the field of play when the goal was scored.
"The referee must disallow the goal if the extra person was a player, substitute, substituted player, sent-off player or team official of the team that scored the goal; play is restarted with a direct free kick from the position of the extra person."