Diego Leon was barely a household name in his own home.  He was a 17-year-old left back from Paraguay, making his way through the youth ranks of Cerro Porteno, one of the South

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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.