Has Pep Guardiola discovered Man City’s best centre-back pairing?

At halftime of Man City’s 2-1 FA Cup quarter-final win over Bournemouth Pep Guardiola made a substitution that may have unlocked Man City’s best centre-back pairing. Nico O’Reilly came on for Abdukodir Khusanov and Josko Gvardiol went from left-back to centre-back. O’Reilly’s introduction changed that game as Pep Guardiola’s side went on to book a seventh consecutive…