Beltrán began in the ranks of Instituto, departing in 2016 to sign for Argentine Primera División side River Plate.[3][4] He made his professional debut on 2 December 2018 at the age of seventeen, appearing for the last seven minutes of a game against Gimnasia y Esgrima.[2] He had previously been an unused substitute a week earlier versus Aldosivi on 27 October.[2][5]
On 15 July 2021, Beltrán joined Colón on a dry loan until the end of 2022.[6]
Fiorentina
On 11 July 2023, Beltrán joined Fiorentina on a transfer worth €20 million plus add-ons.[7]
On 26 October 2023, he scored his first two goals for the club in a 6–0 win over FK Čukarički in the group stage of the UEFA Europa Conference League.[8] His first Serie A goal came from the penalty spot in a 3–0 win against Salernitana on 3 December.[9] On 8 May 2024, he scored a penalty in a 1–1 away draw against Club Brugge in the Europa Conference League semi-final second leg, which qualified his club to the their second consecutive final by winning 4–3 on aggregate.[10]
Personal life
Born in Argentina, Beltrán is of Italian descent.[11]