Manchester United have opened talks with Chelsea over a deal for Mason Mount, who looks certain to leave his boyhood club after failing to agree a new contract. United have already agreed personal terms with the midfielder and are confident of making him Erik ten Hag’s first summer signing. They hope to pay between £50m and £60m for Mount, whose contract expires next year, but Chelsea are likely to ask for at least £70m plus add-ons. Arsenal, Liverpool and Bayern Munich are also interested in the England international. United will hope Mount’s contract situation gives them the upper hand in negotiations. They also know Chelsea are under pressure to sell players and will be keen to get a deal done before the end of the month.