Mundo Deportivo reports that Fulham's involvement has created complications in the transfer negotiations for Arnau Martínez. The report also states that the club became involved during negotiations between Valencia and Girona for the player.

Journalist Jan Wiedemann has reported that Fulham has shown interest in signing Arnau Martínez and could pay the right-back's full release clause, which is set at 8 million euros. This could potentially undermine an operation with Valencia.

Arnau Martínez, a 23-year-old right-back, is very likely to leave Girona this summer, with several clubs interested in the Spanish footballer. Fulham, Betis, and PSV are among the teams reportedly monitoring him. Martínez has a release clause of 8 million euros. The Spanish U21 international, for whom he has 12 caps, joined Girona in April 2021, and his contract runs until June 2027. In the 2025/2026 LaLiga season, he made 35 appearances, scoring 2 goals and providing 3 assists. His current Transfermarkt market value is €10.00m, while in early 2026 his valuation was cited as being between €14 million and €18 million.