Trevor Sinclair believes Arsenal manager Mikel Arteta must take the blame for his side's lack of discipline in big matches after the Gunners were reduced to 10 men during their 3-0 north London derby defeat against Tottenham on Thursday.
Rob Holding became the sixth player to be sent off for Arsenal this season when he was dismissed in the first half for two fouls on Heung-min Son.
Arsenal have also had players shown red cards in games against Manchester City and Liverpool this term, and Sinclair feels Arteta's demeanour on the touchline is affecting his team's decision-making in key moments.