Dean Henderson will only be prepared to sign a new Manchester United contract if he is promised the number one spot. The 23-year-old has spent two hugely successful years on loan at Sheffield United, helping the Blades win promotion to the Premier League during the 2018/19 campaign and playing an integral part in their unexpected surge towards the European places this season. Henderson's performances have seen him billed as capable of rivalling David de Gea for a starting spot at United next...