[7] On 18 August 2014, Sandro scored the last of a 6–0 victory over Club León for that year's Joan Gamper Trophy, after assisting fellow youth graduate Munir El Haddadi in the fifth.

[10] Sandro made his debut in the Spanish top division on 31 August 2014, coming on as a substitute for Pedro midway through the second half of the fixture at Villarreal CF and scoring the game's only goal 12 minutes later.

[11] He netted for the first time in the UEFA Champions League on 21 October, contributing to a 3–1 group stage home win against AFC Ajax with an injury-time strike.

[16] As the former appeared in just ten league games throughout the season, technical director Robert Fernández announced in May 2016 that the player would leave the club the following month, adding he was only kept in the squad due to a transfer embargo that was to end shortly after.

[17] On 2 July 2016, Málaga CF leaked news of the potential signing of Sandro, and their official website temporarily featured a player profile, shortly after his release from Barcelona.

[19] He made his debut on 19 August, starting as they began the season with a 1–1 draw against CA Osasuna, and scored his first goal four weeks later to equalise in a 2–1 win over SD Eibar also at La Rosaleda.

[20] Sandro took his season tally to 11 on 8 April 2017 after helping defeat former club Barcelona 2–0 at home, netting the first through a solo effort that started in his own half.