Martín Payero

Banfield

Payero's career started with Banfield. He first appeared in their first-team squad during the Primera División season, making his debut against San Martín on 4 December 2017; being substituted on for Eric Remedi with five minutes remaining. He made three further appearances in 2017–18 before fourteen more occurred in 2018–19. He scored his first senior goal in the latter, netting in a Copa Argentina victory over Juventud Unida on 27 February 2019.

Loan to Talleres

The succeeding August saw Payero depart on loan to fellow Primera División team Talleres. He scored once, versus Newell's Old Boys, in eighteen matches for them.

Middlesbrough

On 5 August 2021, Payero joined Championship side Middlesbrough on a three-year deal for around €7 million. On 11 August he made his debut for the club in a cup game against Blackpool which Middlesbrough then lost 3–0. He made his league debut on 14 August against Bristol City Which Middlesbrough went on to win 2–1. He scored his first goal for the club in a 2–0 victory over Cardiff City on 23 October that year. He scored a penalty in the shootout against Manchester United as Middlesbrough knocked them out of the FA Cup on 4 February 2022. Just less than a week later Middlesbrough went to QPR, and Payero came on as a substitute in the 87th minute. Minutes later, he went into a tackle, injured himself, was stretchered off the pitch, and did not make an appearance for the Middlesbrough senior team until…

Payero has previously been called up to train with the Argentina U20 squad. He played in all three of Argentina's matches in the 2020 Summer Olympics.

As of match played 1 December 2025

Boca Juniors

Primera División: 2022 Supercopa Argentina: 2022