[4] He helped the Lions to the final of the Copa del Rey in 1973 and 1977; in the former edition, he came on as a late substitute for Antón Arieta in the 2–0 win over CD Castellón.

[10] In the 1974–75 season, Carlos scored a career-best 19 goals in 32 games for a tenth place in La Liga, winning the Pichichi Trophy in the process.

[11][2] On 18 May 1977, he put his side 2–1 up at home against Juventus FC in the final of the UEFA Cup – his last of five during their continental run – but the Italians won the trophy on the away goals rule.

[4] Carlos was never capped by Spain at senior level, but did play for the under-21 side once, in a match against Yugoslavia at Elche's Estadio Manuel Martínez Valero.

[2] He performed roles assisting various sports teams, including basketball club CB Cajabilbao and the Spanish national squads in handball and women's football.