Manchester City's lack of discipline under Pep Guardiola again came to the fore on Monday, despite victory at home to Burnley.The Citizens had to overcome adversity against Sean Dyche's men at the Etihad to keep their slim hopes of chasing down Chelsea in the Premier League title race alive.That adversity was due to a lack of discipline, with one player again letting himself, his teammates and his supporters down. Fernandinho was sent off once again and this stat from Opta shows that it's becoming a pattern that badly needs addressed by Guardiola.To their credit, City's quality showed in the end with Gael Clichy and Sergio Aguero providing the moments of magic to secure a 2-1 win, despite playing almost an hour without Fernandinho.It's not just the Brazilian though, as Squawka show Man City are out-performing every other side in a very disappointing area; most red cards by a Premier League team this season.If City are to turn around their season and secure a Champions League place for next season then Pep Guardiola really needs to get his side under control.Obviously, playing with 10-men isn't feasible on a consistent basis. The suspensions are hurting their ambitions too with Sergio Aguero and Fernandinho already missing multiple games this season.