[2] On 1 May 2010, whilst still a junior, he made his senior debut with the B team, playing the second half in a 2–1 home win against Valencia CF Mestalla in the Segunda División B.

On 26 February of the following year, after replacing fellow youth graduate Albert Dalmau, he contributed one goal to a 6–4 Segunda División away victory over CD Numancia.

He scored five times in 27 games in the 2012–13 season, again spent in the second tier, and continued to appear regularly the following campaign, netting a career-best seven goals as Barça B finished third.

[9] On 19 July 2016, after cutting ties with Villarreal, Espinosa signed a two-year deal with Levante, recently relegated to division two.

[14] On 1 February 2021, after nearly a year of inactivity, Espinosa signed a short-term deal with CF Fuenlabrada back in his country's second tier.