Fabrizio Romano is yet to utter those three magic words. Manchester United supporters will need to be patient as they await the fourth ‘here we go’ of the summer, following the earlier acquisitions of Joshua Zirkzee, Leny Yoro and former Arsenal wonderkid Chido Obi Martin. But Romano certainly did little to quell the excitement with a not-so cryptic clue that certainly won’t take much deciphering. At just after 10:30 on Saturday morning, Romano – referring to an earlier post talking about Noussair Mazraoui’s potential move to Old Trafford – tweeted a Morocco flag, a circle in the colour of Uni…