Diego Basilio León Blanco (born 3 April 2007) is a Paraguayan professional footballer who plays as a left-back and left wing-back for Premier League club Manchester United and the Paraguay national team. Early life León was born on 3 April 2007 in Colonia Yguazú, Paraguay, as the youngest of nine children. He is the son of Brígida Blanco. Club career Cerro Porteño León began his career with Cerro Porteño, making his senior debut on 2 August 2024, in a 1–0 win over Sportivo Ameliano, scoring the winning goal. Manchester United It was announced on 11 January 2025 that León would sign for Premier League club Manchester United in the summer window. On 5 July 2025, Manchester United confirmed the signing of León. International career León made his debut in the senior national team on 14 October 2025, coming on as a substitute against South Korea. Style of play He has been described as "one of the great promises of Paraguayan football".