Rio Ferdinand, Gary Neville, Patrice Evra, Paul Scholes, Wayne Rooney, Dimitar Berbatov and substitute Cristiano Ronaldo all found their way into referee Mike Riley's book during the 1-1 draw at Stamford Bridge yesterday.

And according to The Sun, the FA may take action against United over their players' indiscipline.

Ferdinand, who was talked his way to a yellow card in the first half, could face separate charges for failing to observe the 'Respect' campaign as he was visibly agitated with Riley's officiating throughout the game.

The United-Chelsea fixture is quickly becoming one of the most hostile match-ups in European football, with controversy consistently marring proceedings both on and off the pitch.

Both clubs could still face sanctions over last season's Battle of the Bridge, when Evra and his team-mates were involved in a racially charged confrontation with members of the Chelsea groundstaff after the game.