[3] He made his senior debut with Málaga's reserve team on 24 September 2016, playing the last 15 minutes in a 5–0 Tercera División home rout of UD Dos Hermanas San Andrés.
[citation needed] Planas scored his first senior goal on 12 March 2017, the equalizer in a 2–2 away draw against Martos CD.
On 29 January 2019, Planas signed a two-and-a-half-year contract with AD Alcorcón, and was immediately loaned to fellow second division side Elche CF until June.
[10] During 2023–24 Copa del Rey, he scored three goals for Unionistas and become 7th top scorer of the tournament alongside eleven other players.
He scored a single goal in all-win matches against Gernika, Sporting Gijón, and Villarreal (via penalty), respectively throughout the tournament.