Jon Gaztanaga Arrospide (born 28 June 1991) is a Spanish professional footballer who plays as a central defender or a defensive midfielder.
Club Career
Born in Andoain, Gipuzkoa, Gaztanaga was a product of Real Sociedad's youth system. He made his senior debut with the B team, spending several seasons in Segunda Division B with the side and also achieving promotion from Tercera Division in 2010.
Gaztanaga made his official debut with the main squad on 18 August 2013, replacing fellow youth graduate Gorka Elustondo in the dying minutes of the 2–0 La Liga home win against Getafe CF. His first appearance in the UEFA Champions League took place on 10 December, as he came on for Mikel Gonzalez in a 0–1 group stage home defeat to Bayer 04 Leverkusen.
In early 2014, Gaztanaga renewed his contract with Real Sociedad until 2016, being definitely promoted to the first team in May. On 26 January 2015, after appearing sparingly during the first half of the campaign, he joined Segunda Division club SD Ponferradina on loan until June.
Monaco 
Stade Brestois 29 
Bordeaux 
Nimes 
Bayern Munich 
FC Augsburg 
Paris Saint Germain 
Toulouse 
CSKA Moscow 
FC Rostov 
Leicester 
Chelsea 
Valencia 
Betis 
Dynamo Kyiv 
Chornomorets Odesa 
Verona 
Inter 
Bayer Leverkusen 
FC Heidenheim 
Borussia Dortmund 
SC Freiburg 
VFL Wolfsburg 
Union Berlin 
Arsenal 
Nottingham Forest 
Everton 
Brentford 
Spartak Moscow 
Lokomotiv Moscow 
Rangers 
Dundee Utd 
Atletico Madrid 
Alaves 
Lens 
Marseille 
Ingulets Petrove 
Shakhtar Donetsk 
AC Milan 
Juventus 
ST Malo 
Manchester City 
Tottenham 
Eintracht Frankfurt 
Werder Bremen 
Girona 
Espanyol 
Feyenoord 
Heerenveen 
ST Etienne 
Montpellier 
Grenoble Foot 38 
Heart Of Midlothian 
Celtic 
Reims 
Lyon 
PSV 
Groningen