Aston Villa is seeking to improve its defense and has targeted Jon Martín. Manager Unai Emery requires a central defender and has given his approval for a move for the 20-year-old Spanish player from Real Sociedad. The Spanish U21 international made 25 appearances and scored two goals during the 2025/2026 LaLiga season. Aston Villa intends to offer €25 million, a figure that matches the player's current market value according to Transfermarkt. However, Real Sociedad is not expected to approve his departure easily and will ask for approximately €50 million. Martín's contract is valid until 2031. Arsenal, Barcelona, and Atletico Madrid are observing the defender's situation. For the upcoming campaign, Aston Villa is able to offer Martín Champions League football.