The narrative that is being constantly put forward by Mourinho that it is a fixture between a young team in development and a squad of ready-made champions is placed in further question by the respective ages of the squads. The average for Manchester City is 27.4 compared to 28.3 for Chelsea. The presence of 41-year-old Mark Schwarzer on the bench does slightly skew the results but, even if we just look at the possible starting line-ups, the average of Chelsea is 28 compared to City’s 28.1. City also have the youngest player who is likely to be involved in either squad tonight – 20-year-old Matija Nastasic – while Chelsea have five players over the age of 30 compared to three for City.