In late November/early December 2012, Planas appeared in his only two competitive games with the first team: he made his debut in a 3–1 home win over Deportivo Alavés in the round of 32 of the Copa del Rey (6–1 on aggregate), featuring the last 20 minutes of the match in place of Adriano.[2] The following week, as the Blaugrana were already qualified as first in their UEFA Champions Leaguegroup, he started against S.L. Benfica in a 0–0 draw, also at the Camp Nou.[3]
Celta
On 5 June 2014, Planas was released by Barcelona,[4] but on the same day he joined RC Celta de Vigo on a three-year deal.[5] He made his La Liga debut on 24 August, playing the entirety of the 3–1 home victory over Getafe CF.[6]
Planas' contract was not extended at the end of the 2016–17 campaign, and he left Balaídos with 59 appearances in all competitions to his credit.[7]
Girona
On 13 July 2017, free agent Planas signed a three-year contract with newly-promoted Girona FC.[8] He spent the better part of his first season dealing with injury problems.[9][10]
Immediately after leaving Girona, Planas joined AEK Larnaca FC of the Cypriot First Division.[12][13] In June 2021, having often been injured and also criticised for his performances,[14][15] he announced his retirement aged 30.[16]