Manchester United’s start to the season has been a mixed bag but there has been a positive impact from the club’s new summer signings. The Red Devils have made four new additions to Erik ten Hag’s squad – set to become five when Manuel Ugarte completes his £42m move. Leny Yoro is not expected to feature until October after suffereing a fractured metatarsal against Arsenal in pre-season. But Matthijs de Ligt, Noussair Mazraoui and Joshua Zirkzee have all featured at the start of the season and made a bright start to life at Old Trafford. Zirkzee scored on his debut against Fulham to kick-start …