Rio Ferdinand claims to have been informed by ‘guys at Man City’ that Manchester United’s appointment of Omar Berrada as their new CEO has come as a massive surprise to the reigning Premier League champions. 2023 Treble winners or not, you can’t buy aura. Manchester United, just weeks into the INEOS era and before Sir Jim Ratcliffe’s minority takeover has even been ratified by the Premier League, have just snatched one of the most important cogs in the well-oiled Man City machine from under the noses of their North West neighbours. Much to the surprise, it seems, of those in blue. Some at Man …