He made his senior debut with the latter's first team on 24 November 2013, playing the last 27 minutes of a 1–2 Tercera División home loss against UD Somozas.
On 5 July of the following year, he agreed to a deal with fellow league team SD Compostela,[7] and helped the side in their promotion back to division three 2020.
[10] Shortly after, on 27 January, Villar signed with Polish club Wisła Kraków until June 2024, joining his compatriots Ángel Rodado, Sergio Benito, Tachi, David Juncà, Luis Fernández and Álex Mula.
[11] He aided Wisła in winning the 2023–24 Polish Cup, making five appearances in the competition, including coming on a second-half substitute in a 2–1 victory over Pogoń Szczecin in the final on 2 May 2024.
[13] On 2 July 2024, Villar joined defending Ekstraklasa champions Jagiellonia Białystok on a two-year deal, with an option for a further year.