[3] Two days later, Calavera renewed his link with Nàstic, signing until 2016,[4] and was definitely promoted to the main squad, as a replacement to Sporting de Gijón B-bound Alberto Benito.

[5] On 9 September he made his professional debut, starting in a 2–2 home draw against Girona FC for the season's Copa del Rey (5–4 success on penalties).

[6] On 27 September 2015 Calavera made his Segunda División debut, coming on as a half-time substitute for Xisco Campos in a 0–0 away draw against Real Valladolid.

[11] On 29 August of the following year, he extended his contract with the Armeros until 2021 and was immediately loaned to fellow second division club Sporting de Gijón.

[12] Upon returning, Calavera was assigned to the main squad, and made his top tier debut on 5 May 2019 by playing the latter minutes of a 1–0 home defeat of Real Betis.