After two years on loan at neighbouring Barakaldo CF of Segunda División,[3] Dani returned to his alma mater, scoring in double digits in nine of the following ten years.[4] His first La Liga match occurred on 29 September 1974 in a 3–0 away loss against Valencia CF and, in the 1976–77 season, as the Lionsreached the final of the UEFA Cup and the Copa del Rey,[5] also finishing third in the league, he totalled 29 goals in 46 official games; in the latter competition, over a 12-year stint at the San Mamés Stadium, he reached the 20-goal mark twice.[4]
Dani helped Athletic to back-to-back titles in his later years (1983–84),[3] although he was only a fringe player in the latter campaign – ten matches, three goals – due to the emergence of another youth product of the club, Manuel Sarabia. He would be further pushed down the pecking order after the first-team promotion of Julio Salinas, and eventually retired in June 1986 at the age of 35, having scored 147 league goals from 302 appearances.[4]
^ abAgiriano, Jon; González San Martín, Miguel (20 February 2011). ""La esencia del fútbol está dentro del área"" ["The essence of football is in the box"]. El Correo (in Spanish). Retrieved 19 April 2023.
^ abc"Carlos y Dani son los maestros" [Carlos and Dani are the masters]. Mundo Deportivo (in Spanish). 19 January 2010. Retrieved 19 April 2023.