On 31 January 2012, Puertas moved to Granada CF, being assigned to the reserves after Poli Ejido's dissolution.
[5] He made his professional debut on 9 September, coming on as a second-half substitute for José Ángel Pozo in a 3–3 Copa del Rey home draw against Elche CF (4–3 win on penalties).
[7] He only scored his first professional goal on 3 September of the following year, netting the first in a 3–0 home win against Rayo Vallecano; he added another the following weekend, in a 3–3 draw at Girona.
On 16 June 2017, Puertas returned to Granada, signing a three-year contract and being assigned to the main squad, also in the second tier.
Puertas made his debut in the top tier on 17 August 2019, starting and scoring his team's fourth in a 4–4 away draw against Villarreal CF.