'Senior' Man Utd players blaming Erik ten Hag's intense pre-season for disappointing Premier League start as injuries stack up for Red DevilsGill ClarkGetty ImagesManchester UnitedE. ten HagPremier LeagueSeveral senior Manchester United players believe Erik ten Hag's intense pre-season training schedule is a major reason for the team's poor start.Article continues belowArticle continues belowArticle continues belowArticle continues belowManchester United endure poor startSquad has been hit hard by injuriesSome players feel intense pre-season a factor