When Pep Guardiola steps out at Old Trafford for the 198th Manchester derby on Saturday, he will be taking on a sixth different United boss as he approaches a decade in charge at City. Michael Carrick is the latest man in the Manchester United hotseat, with this his first game since joining as interim head coach after the sacking of Ruben Amorim. As chaos continues to reign for United, there remains a calmness and serenity on the blue half of the Manchester divide. Guardiola and his troops will