Newell's Old Boys signed Nadalín to their youth system in 2011 from Malvinas Argentinas.[3][4] Six years later, in December 2017, he made his professional debut during a 2–2 draw against Racing Club on 2 December.[2][5][6] Four further appearances followed in all competitions in his debut campaign of 2017–18, including a continental competition bow in the 2018 Copa Sudamericana versus Atlético Paranaense.[2][7] After twenty-one games across 2018–19, Nadalin scored his first competitive goal in his second match of 2019–20 versus Unión Santa Fe on 17 August 2019.[2][8]