Manchester United have now completed the signing of Bayern Munich duo Matthijs de Ligt and Noussair Mazraoui. Bayern Munich have just waved goodbye to two players they signed just two years ago. As Manchester United well know, the trouble with constantly changing managers, is you end up with even more turnover of player personnel. Over the last four years Bayern have from Hansi Flick to Julian Nagelsmann to Thomas Tuchel to Vincent Kompany. And with Kompany embodying yet another fresh start, two key players have pushed for new starts of their own, with Matthijs de Ligt and Noussair Mazraoui qu…