By Jonathan Wilson The Portuguese superstar lashed out at the club in a viral interview with Piers Morgan, putting his ego and vanity on full display. The problem when you sign Cristiano Ronaldo is that, no matter how big a club you are, his gravitational pull is greater. Everything revolves around him and he is not, it’s fair to say, somebody much inclined to seeing the bigger picture. And so it is that Manchester United, having won at Fulham with a late goal, heading into the World Cup break reflecting not on how much everything has improved under Erik ten Hag nor on how the club at last mig…