[1] On 27 July 2017, after finishing his formation, he joined Girona FC and was assigned to the reserves in Segunda División B.
[2] Montes made his senior debut on 20 August 2017, starting in a 0–1 home loss against RCD Mallorca.
Montes made his professional debut on 31 October 2018; coming on as a second-half substitute for injured Douglas Luiz, he scored a last-minute equalizer in a 2–2 away draw against Deportivo Alavés, for the season's Copa del Rey.
[4] After two seasons as a starter, he moved to Primera División RFEF team Albacete Balompié on 11 June 2021.
[5] After helping Alba in their promotion to Segunda División, Montes was loaned to Gimnàstic de Tarragona in the third tier on 23 August 2022.