Pep Guardiola has revealed the worrying reason why Manchester City centre-backs Ruben Dias and Nathan Ake were substituted at half-time on Tuesday evening, as the Blues booked their place in the FA Cup quarter-finals. Pep Guardiola named a remarkably strong side to face Peterborough United at the Weston Homes Stadium on Tuesday evening, with Phil Foden, Jack Grealish, Gabriel Jesus and Riyad Mahre...