Those who submit STAFF changes, please provide an official source that shows the transfer/release. Transfermarkt isn't always trustworthy when it comes to staff.
2000229718 · Plays for Real Sociedad
Contract expiry set to 30/06/2030.
Plays for Real Sociedad
Jon Martín is a 18 year old professional footballer from Spain playing as D C.
He is currently contracted to Real Sociedad de Fútbol until 30-Jun-2030 earning £639 per week .
Potential: Can Still Improve