In addition to the domestic league, Alavés participated in this season's edition of the Copa del Rey. The season covered the period from 20 July 2020 to 30 June 2021, with the late start to the season due to the Covid-19 pandemic in Spain.
Born in Sondika, Biscay, Aguirre joined Athletic Bilbao in 1957 at the age of 18 from Basque neighbours CD Getxo, being immediately promoted to the first team.
The 2020–21 season was the 122nd season in the existence of Athletic Bilbao and the club's 90th consecutive season in the top flight of Spanish football.
From the beginning, the press reported more on the immigration department than on the games. This, together with my mistake in thinking that the Argentine community would be involved in the project, meant that of the 1,500 season tickets…