Manchester United have started Marcus Rashford in all three of their matches so far this season. However, the 26-year-old is a shadow of his usual self – as Saturday’s performance against Brighton proved. The Red Devils went into the game hoping to build on their 1-0 win over Fulham on matchday one, with Joshua Zirkzee netting the winner on that occasion. United slumped to defeat against Brighton, however, with goals from Danny Welbeck and Joao Pedro either side of a strike from Amad Diallo giving the home side all three points. Erik ten Hag’s side weren’t awful, but they weren’t brilliant eit…