|Full name||Isaac Carcelén Valencia|
|Date of birth||23 April 1993|
|Place of birth||Puerto de Santa María, Spain|
|Height||1.78 m (5 ft 10 in)|
|Playing position||Right back|
|* Senior club appearances and goals counted for the domestic league only and correct as of 2 June 2018|
On 1 July 2014, after being an undisputed starter for the B-team in its promotion from Tercera División, Iza renewed his contract for a further year, being included in the first team's pre-season late in the month. He was also regularly used during the 2014–15 campaign, appearing in 33 matches and scoring two goals.
On 6 July 2015 Iza moved to Segunda División with Real Zaragoza, after agreeing to a three-year deal. He made his professional debut on 3 October, coming on as a half-time substitute for Rubén in a 1–0 home win against Deportivo Alavés.
Iza scored his first professional goal on 15 December 2015, netting his side's only in a 1–3 loss at Gimnàstic de Tarragona. On 9 July 2017, Cultural y Deportiva Leonesa and Zaragoza reached an agreement for the transfer of Isaac.
- "El portuense Isaac renueva por una temporada por el Betis B" [Portuense Isaac renews for a season for Betis B] (in Spanish). Andalucía Información. 1 July 2014. Retrieved 7 July 2015.
- "La lista del Betis para Inglaterra, con Juanfran pero sin Braian y Vilarchao" [Betis' list to England, with Juanfran but without Braian and Vilarchao] (in Spanish). ABC. 31 July 2014. Retrieved 7 July 2015.
- "Jorge Díaz e Isaac, nuevos jugadores del Real Zaragoza" [Jorge Díaz and Isaac, new players of Real Zaragoza] (in Spanish). Zaragoza's official website. 6 July 2015. Retrieved 7 July 2015.
- "Ortuño le devuelve la sonrisa al Zaragoza" [Ortuño gives back the smiles to Zaragoza] (in Spanish). Marca. 3 October 2015. Retrieved 11 October 2015.
- "Un gran Nástic vuelve a la promoción de ascenso" [A great Nástic returns to the promotion places] (in Spanish). Marca. 19 December 2015. Retrieved 21 December 2015.
- "Acuerdo para el traspaso de Isaac Carcelén a la Cultural Leonesa" [Agrement for the transfer of Isaac Carcelén for Cultural Leonesa] (in Spanish). Real Zaragoza. 9 July 2017. Retrieved 9 July 2017.
- "Isaac Carcelén, nuevo refuerzo del CF Rayo Majadahonda" [Isaac Carcelén, new addition of CF Rayo Majadahonda] (in Spanish). CF Rayo Majadahonda. 21 July 2018. Retrieved 21 July 2018.