According to Mundo Deportivo, Jon Martín has extended his contract with Real Sociedad until 2032. This is his third contract renewal in the last two years and three months. He renewed until 2030 in April 2024, until 2031 in October 2025, and now until 2032 in July 2026. The 20-year-old Spanish centre-back made 39 appearances in LaLiga last season, contributing two goals and one assist, and has four caps for the Spain U21 team. He has previously been linked with several clubs, including Arsenal. Before his renewal, reports in June 2026 suggested Aston Villa intended to offer €25 million, while Real Sociedad's asking price was approximately €50 million. His release clause was cited as being between €50-60 million earlier in the year. His current Transfermarkt market value is €25.00m.