
Arsenal has completed the signing of defender Cristhian Mosquera from Valencia for an initial fee of approximately 15 million euros (£13 million).
The 21-year-old has signed a five-year contract with the Gunners, which includes an option for an additional 12 months.
Mosquera, capable of playing both centre-back and right-back, fills the gap left by Takehiro Tomiyasu, who mutually agreed to terminate his contract earlier this month.
The Spain Under-21 international joined Valencia in 2016 at the age of 12 and made his first-team debut in 2022, becoming the youngest centre-back to feature for the club.
Mosquera made 90 appearances for Valencia and was a regular starter last season, playing the full match in 37 of the club's 38 La Liga games as they finished 12th.
He joins Martin Zubimendi, Kepa Arrizabalaga, Christian Norgaard, and Noni Madueke as part of Mikel Arteta's squad additions this summer, with Viktor Gyokeres also nearing a move to the Gunners.
Mosquera is set to join Arsenal's pre-season tour in Asia, having already received permission from Valencia to travel before the deal was finalized.
Arsenal defeated AC Milan 1-0 in Singapore at the National Stadium on Wednesday and will face Newcastle United at the same venue on Sunday. They will then travel to Hong Kong to play Tottenham Hotspur before returning to London.
Mosquera Brings Availability and Versatility - Analysis
Arsenal has secured Mosquera, a young defender they believe will enhance their defensive options with his quality.
Having played senior football for two seasons, Mosquera not only logged the most minutes in the Valencia squad during the 2024-25 season but also ranked second among all outfield players in La Liga.
This level of availability is crucial for Arsenal manager Arteta, who aims to avoid the injuries that plagued the team last season.
In addition to his availability, Mosquera's ability to play across all defensive positions adds versatility to a robust Arsenal squad.
While the 21-year-old may need time to adapt to the league and country, a significant Spanish-speaking contingent at Arsenal should ease his transition.