During the 2013 January transfer window, Piazon was loaned to Spanish La Liga side Málaga until the end of the season. He made his debut for Málaga on 24 January 2013, coming on as a substitute in the 4–2 home defeat in the Copa del Rey quarter-final against Barcelona. On 16 February, he assisted Javier Saviola's winner in a 1–0 home win against Athletic Bilbao. On 9 March 2013, Piazon made his second assist for Málaga with a ball from a free-kick that found Martín Demichelis, who headed to score in a 1–1 draw against Real Valladolid.