In the summer of 2023, when FC Barcelona signed Iñigo Martínez on a free transfer from Athletic Club, the reaction was mixed. He was 32. He had spent his career at two Basque clubs — Real Sociedad and Athletic — neither of whom are European heavyweight operations. He was left-footed, which Barça needed, but he was also left-footed in a squad that already had Marcos Alonso. And most critically: was he good enough for a Champions League campaign? Was a player of his age and profile the right solution to Barça’s defensive problems?
The answer, two seasons later, is clear. Iñigo Martínez has been one of the best defenders in Europe during his time at the Camp Nou. That sentence may read as hyperbole. It is not.
What He Does
To understand Martínez’s value, you need to understand what Flick’s system asks of its centre-backs. They are not just defenders. They are the first point of build-up play, required to pass with accuracy under pressure, to carry the ball out of defence when pressing allows space, and to read the positions of opposition forwards before the ball even arrives. This is demanding in a way that traditional centre-back metrics do not capture. Clearances and headers don’t tell you how good a centre-back is in a high-line system. Passes under pressure, progressive carries from deep, and positioning to cut off through-ball opportunities tell you far more.
On every one of these metrics, Martínez ranks in the top tier of La Liga centre-backs. His pass completion under pressure is 89.3%. His positioning — measured by the number of times he is beaten by runs in behind — is exceptional. He has been dribbled past just twice in La Liga this season, in 2,800 minutes of football. He reads the game at a level that allows him to compensate for the physical decline that inevitably comes with age.
“Football intelligence is the last thing to go. Martínez doesn’t need to be the quickest defender in Europe — he just needs to never be in the wrong place. And he almost never is.”
The Partnership with Cubarsí
Part of Martínez’s value is structural: his partnership with Pau Cubarsí has become one of the best centre-back pairings in European football. Cubarsí, at 17, brings athleticism and an almost preternatural calmness; Martínez brings experience, positioning, and leadership. They complement each other in ways that feel less like a coaching decision and more like something that was always meant to happen. Barça’s defensive numbers with this partnership — goals conceded per 90, xGA, clean sheet percentage — are among the best of any defensive unit in Europe’s top five leagues.
What Comes Next
Martínez turns 34 in May 2025. His contract runs until 2026. There will come a point — probably next summer — when Barça need to plan for his eventual replacement. The irony is that his performances have made this harder, not easier: a player this consistently excellent is difficult to replace, and the market for his profile (experienced, intelligent, left-footed centre-back comfortable in a high line) is thin. For now, the focus is on using him while he is at this level. That level, to be absolutely clear, remains elite.
Barça signed Iñigo Martínez because they needed a left-footed centre-back. What they got was one of the most important players in their squad. It is, on any measure, one of the best free transfers in recent La Liga history.
