 On 10 July 2018, Díaz moved to Real Oviedo and was assigned to the reserves in the third division.On 19 July of the following year, he signed for another reserve team, Racing de Santander B in division four.On 24 August 2019, as both Iván Crespo and Luca Zidane were injured, Díaz made his professional debut for Racing de Santander by starting in a 1–1 away draw against UD Almería for the Segunda División championship.