[1] He made his debut for the B-team in the Segunda División on 22 September 1974 in a 7–1 loss away to Sevilla,[2] totalling 17 appearances over the league season and being sent off on 17 May in the penultimate game, lost 1–0 at Recreativo de Huelva.
[1] In July 1977, Mir was linked with a transfer to Racing de Santander as compensation for Rafael Zuviría moving in the other direction.
[9] In October 1978, Barcelona sold Mir to Real Valladolid for 2.5 million, with the player choosing his destination ahead of an equal offer from Elche.
[1] Mir dropped down to Segunda División B in August 1980 after his release from Barcelona, signing for fellow Catalan club Terrassa on a one-year deal with the option of a second.
With the latter, he was chosen for the 1976 Olympic event in Canada,[12] coming on as a half-time substitute for Alberto Vitoria in a 2–1 loss to Brazil in the first group game.