Manchester United now have a “concrete possibility” of signing one player this summer after Erik ten Hag inked a contract extension with the Red Devils. That is according to football agent Giulio Tedeschi, who has offered his two cents on one piece of transfer business Manchester United could complete this summer. Erik ten Hag’s future was plunged into doubt after Ineos commissioned an end-of-season review in the aftermath of United’s FA Cup triumph in May. The 54-year-old Dutchman oversaw a 2023-24 campaign where his United first-team squad was injured and the Red Devils limped to an eighth-p…