The 20-year-old defender has already accumulated 73 LaLiga appearances over the past two seasons, establishing himself as a promising talent. Mosquera, a Spain youth international who is also eligible to represent Colombia, has attracted interest from several clubs, including Bundesliga side RB Leipzig.
Despite Valencia's attempts to renew Mosquera's contract, Arsenal appear to be in a strong position to finalize the deal. Sources suggest that negotiations are progressing over a 20 million euros transfer fee, with Mosquera having reportedly agreed to personal terms with the Gunners.
Arsenal's defensive depth has been under scrutiny, particularly with William Saliba frequently linked with moves away and Gabriel Magalhaes needing reliable cover. Jakub Kiwior, who stepped in for much of last season, could be involved in further transfers as Arsenal seek to balance their backline. Meanwhile, other defensive players like Riccardo Calafiori, Jurrien Timber, and Ben White have predominantly operated at full-back roles.
The Gunners had also pursued youngster Dean Huijsen before his move to Real Madrid, but are now focusing on closing deals for Kepa Arrizabalaga, Christian Norgaard, and Martín Zubimendi as they aim to strengthen key areas of the squad.
Sporting CP striker Viktor Gyokeres has ignited a fierce transfer tussle between Arsenal and Manchester United, with both clubs intensifying efforts to secure the Swedish star's services this summer.
Manchester City midfielder Bernardo Silva has called his appointment as club captain "one of the biggest honours" of his career, as he prepares to lead the Premier League champions into the 2025/26 season.
Athletic Club have formally approached LaLiga to seek clarification on FC Barcelona's ability to sign players under the league's financial fair play regulations, with winger Nico Williams at the center of the inquiry.
Arsenal have received a significant boost in their pursuit of Real Madrid's star winger Rodrygo, who has reportedly requested a move away from the Spanish giants, opening the door for a potential blockbuster transfer.
