Francisco Ballester

He made 105 total appearances for Elche, including defeat in the 1969 Copa del Generalísimo final, and played once for Spain in the same year. In 1970, he joined Real Madrid for a fee of 5 million Spanish pesetas.
Ballester was injured after two games and 100 minutes of play for Real Madrid, and never played for the team again, leaving in 1974. He retired due to a seminoma diagnosis in 1975 and died three years later, aged 30. Provided by Wikipedia