Manchester United confirm Diego Leon as second summer signing to follow Matheus Cunha - Teenage left-back joins from Cerro Porteno in deal that could be worth up to £7million

Manchester United have completed the signing of teenage full-back Diego Leon from Paraguayan side Cerro Porteno. United secured the deal for the 18-year-old for a $4m fee with up to $5m in add-ons based on first team achievements, after completing a pre-contract deal in the winter window.