In 2004, he joined RCD Espanyol's youth setup, after starting out at CD Atlético Baleares.

[7] The following year, however, he signed for FC Barcelona, being linked to Premier League sides Arsenal, Manchester City and Tottenham Hotspur during his spell at the latter.

[12] He went on to lead Arsenal to victory in the 2016 U21 Premier League 2 play-off final which was won by 3 goals to 1 over Aston Villa.

[15] He made his professional debut on 7 September, starting in a 1–0 Copa del Rey home win against CF Reus Deportiu.

[16] On 9 October 2016, Pleguezuelo made his debut in the second tier, playing the last nine minutes in a 3–0 home win against SD Huesca.