Brian Oliván Herrero (born 1 April 1994) is a Spanish professional footballer who plays as a left-back for La Liga club RCD Espanyol.
In August 2013, before even appearing as a senior he moved abroad, signing a three-year deal with Portuguese side S.C. Braga and being assigned to the reserves in Segunda Liga.
[5] On 21 July 2014, after failing to make any appearances with CSKA, Oliván joined another reserve team, Real Valladolid B in Segunda División B.
[12] He helped the club in their promotion to La Liga in his first season, and made his top tier debut on 14 August 2021, starting and netting the opener in a 1–1 home draw against Real Betis.
On 21 June 2022, free agent Oliván moved to RCD Espanyol also in the main category, after agreeing to a three-year contract.