Mateo del Blanco, a 22-year-old Argentinian left-back for Union Santa Fe, has been the subject of interest from Boca Juniors and River Plate, but neither club was successful in signing him this winter. Del Blanco, who has also been deployed on the wing, is now reportedly close to joining Chelsea, according to Renzo Pantich. Del Blanco joined his current club in July 2023 and has a contract until the end of 2028. His current market value is €4.50m, according to Transfermarkt. In the 2025/2026 Torneo Apertura, he has made 10 appearances, scoring 2 goals and providing 1 assist.