MANCHESTER UNITED fans are convinced that defensive star Noussair Mazraoui has undergone a hair transplant.The Moroccan full-back debuted a new look in the Manchester derby on Sunday after seemingly trading his signature curly hair for the near-bald look.GettyNoussair Mazraoui debuted a stark new look against Manchester City[/caption]GettyHe is traditionally known for his curly dark hair[/caption]Fans of the Red Devils and their rivals were both quick to point out the stark new look, and many suggested that it could be the result of a hair transplant.One account on X said: “Mazraoui has been to Turkey for the fresh hair transplant!”Another joked: “Same old stuff on the pitch man. Nothing to get excited about in life. At least Mazraoui has a new hairline it seems. Happy for him and his wife.”The conspicuous timing of the new haircut after a spell on the sidelines for Mazraoui has led some to speculate that the injury he reportedly picked up in a pre-season friendly was actually just his transplant.A third user questioned: “Has Mazraoui been out with a hair transplant?”Even those who did not believe the rumours of a transplant had fun with the new look, comparing him to United right winger Bryan Mbeumo.A fourth user laughed: “Mazraoui and Mbeumo with their matching bald heads down the right hand side are frying me.”The bald head and beard look now dominates United’s right flank, with Mazraoui being deployed either as a right centre-back or right wing-back under Ruben Amorim. SUN VEGAS WELCOME OFFER: GET £50 BONUS WHEN YOU JOINGettyFans compared the new look to that of attacker Bryan Mbeumo[/caption]The pair share a similar style following Mazraoui’s changeGettyThe partnership was not able to change the game for United, who fell to a disappointing 3-0 loss to Manchester City.Phil Foden opened the scoring at the Etihad before an Erling Haaland brace sealed the three points for the hosts. It was a damning blow as United have taken just four points from their opening four games of the season, either side of an embarrassing Carabao Cup exit to fourth-tier Grimsby Town.Their one league victory came through a last-gasp winner against newly-promoted Burnley before the international break.