\r\nManchester United legend Rio Ferdinand has said the club’s decision to appoint Omar Berrada as their new chief executive is their ‘best January signing’.\r\n\r\nBritish billionaire Sir Jim Ratcliffe made his first major move since buying a 25 per cent stake in Man United on Sunday by poaching Berrada from Premier League rivals Manchester City.\r\n\r\nBerrada had been part of the hierarchy at Man City since 2011.