Manchester United introduced all four new signings to the crowd at Old Trafford for the Premier League opener against Fulham. One of the new quartet of signings was named as a starter, Noussair Mazraoui, with Joshua Zirkzee and Matthijs de Ligt finishing the game from the bench. Leny Yoro is currently out injured. Mazraoui impressed Manchester United supporters, even drawing praise from United legend Roy Keane. The Moroccan came straight into the team amid injuries at full-back, and this made his impressive performance stand out even more. Mazraoui was sharp defensively and also linked up well…