 On 11 May 2014, aged only 18, he made his first team debut after coming on as a second-half substitute in a 0–2 Segunda División B away loss against UD Logroñés.In 2015, after finishing his formation, Díaz was assigned to the farm team CFA Estudiantil in the regional leagues.The following year, he was definitely promoted to the main squad, now in Tercera División, and became a regular starter.