*Club domestic league appearances and goals, correct as of 18:19, 1 June 2024 (UTC) ‡ National team caps and goals, correct as of 23:53, 19 November 2024 (UTC)
Marín made his debut for the Castilla side on 2 May 2021, coming on as a substitute in a 3–1 win over Badajoz.[1] He would later be called up to the senior team for the first time on 22 December 2021, spending the entirety of the match on the bench in a 2–1 victory at Athletic Bilbao in La Liga.[2]
Loan to Alavés
On 28 July 2023, Marín was sent to Alavés on a season long loan until 30 June 2024.[3][4]
Napoli
On 10 July 2024, Marín signed for Serie A club Napoli on a 5 year contract.[5][6]