Celta Born in
Vigo,
Galicia, Jonny played youth football with his hometown club
Celta. He spent his
first season as a senior with
the reserves in the
Segunda División B, featuring regularly but suffering relegation. Jonny made his
La Liga debut for the main squad on 1 September 2012, starting in a 2–0 home win against
Osasuna. On 5 November, he renewed his contract with until 2017. Jonny was definitively promoted to the first team at the start of
2013–14 after the arrival of
Luis Enrique as coach, and appeared in 26 matches during that campaign. On 19 January 2015, he further extended his link until 2019. Jonny scored his first professional goal on 20 February 2016, the second in a 3–2 home victory over
Eibar. He finished
the season with 36 league appearances, helping the side to finish sixth and
qualify for the
UEFA Europa League. On 18 January 2017, Jonny scored the 2–1 winner away against
Real Madrid in the
quarter-finals of the
Copa del Rey (eventual 4–3 aggregate triumph).
Wolverhampton Wanderers On 25 July 2018, Jonny joined
Atlético Madrid for an undisclosed fee, signing a six-year contract but moving immediately to English club
Wolverhampton Wanderers on a
season-long loan. His maiden appearance in the
Premier League took place on 11 August, when he played the entire 2–2 home draw against
Everton. Jonny scored his first league goal on 29 September 2018, in a 2–0 home win over
Southampton. On 18 November, he suffered a knee
ligament injury while playing for
Spain, being initially sidelined until the end of the year but recovering a few weeks later. Having been a regular first-team player during the first half of the campaign, Jonny agreed to a permanent four-and-a-half-year deal at
Molineux on 31 January 2019 for an undisclosed fee, reported to be £15 million. In August 2020, during a
Europa League tie against
Olympiacos, he suffered an
anterior cruciate ligament injury that sidelined him for six months. Jonny returned to action on 7 February 2021, playing the first half of the 0–0 league draw against
Leicester City. He signed a new contract shortly after, until 2025. On 4 April 2021, Jonny suffered another serious ACL injury to the same knee while training for the upcoming fixture against
West Ham United, which ruled him out for the rest of
that season and the bulk of
the following one. He made his return on 24 February 2022, as a second-half
substitute in a Premier League game at
Arsenal. Jonny marked his 100th competitive game for Wolves on 18 March 2022 by scoring the first goal in the 3–2 home loss to
Leeds United, his first goal since July 2020. He repeated the feat in the subsequent match, a 2–1 home defeat of local rivals
Aston Villa. On 31 March 2023, Jonny was awarded with the
Premier League Goal of the Month, courtesy of his 41-yard shot in the 4–2 home loss to Leeds thirteen days earlier. This also represented the first occasion a club player had won the accolade since its creation in 2016. Despite being placed on the transfer list at the beginning of the
2023–24 season, Jonny rejected offers to return to Spain; he then informed his team's hierarchy that he wanted to 'fight for his place.' However, having made only three appearances up until that point, on 4 December it was revealed that the week before a match against Arsenal at the
Emirates, he was excluded from the squad after swinging an elbow at under-21 player
Tawanda Chirewa and spitting at coaching staff during a training session. Four days later,
sporting director Matt Hobbs announced that the player would not train with the main squad until the end of January, while manager
Gary O'Neil said that he could eventually make his return in case he was not transferred during the winter
transfer window; however, after five and a half years at Wolverhampton, on 26 January 2024 his contract was cancelled by mutual consent.
PAOK On 29 January 2024, Jonny signed a one-and-a-half-year deal with
Super League Greece club
PAOK. He won the national championship in his
debut campaign, contributing 12 matches to the feat.
Later career The 31-year-old Jonny returned to his country in July 2025, agreeing to a two-year contract at top-tier
Deportivo Alavés. ==International career==