On 27 April 2013, Romera scored a hat-trick in a 5–2 home rout of La Roda CF.[2] On 30 November he made his first-team – and La Liga – debut, playing the last 19 minutes of the 3–1 away loss against RC Celta de Vigo.[3]
Romera made his second appearance with the main squad on 5 December 2014, in a 4–3 away win over Real Betis in the round of 32 in the Copa del Rey: after coming on as a substitute for Teerasil Dangda, he scored a goal which was later disallowed.[4] He played his second league game on 17 January of the following year, as he featured four minutes in a 3–2 defeat at Valencia CF.[5]
Barcelona B
On 21 September 2015, Romera signed a three-year deal with another reserve team, FC Barcelona Atlètic also of the third tier.[6] On 1 April 2017, he scored a hat-trick in a 12–0 home demolition of CD Eldense.[7]
Cádiz
On 17 July 2017, Romera agreed to a four-year contract at Cádiz CF from Segunda División, for a fee of €350,000.[8] On 31 January 2019, having been rarely used during the campaign, he was loaned to CF Rayo Majadahonda of the same league for five months.[9]
Romera moved to second division side AD Alcorcón on 15 August 2019, on a one-year loan.[10]