West Ham striker Taty Castellanos has reportedly informed the club of his desire to leave following the Hammers’ relegation to the Championship. The 27-year-old Argentina international has made it clear he does not wish to play in England’s second tier and is prioritizing a return to La Liga.

According to Spanish outlet Vamos Mi Sevilla FC, Castellanos has communicated his intention to exit West Ham, with both Sevilla and Real Betis emerging as serious contenders for his signature. Having previously impressed during his spell at Girona, the Argentine is eager to return to Spanish football, where he experienced one of the most productive periods of his career.

Key details from the report include:

• West Ham's reluctance to accept a significant financial loss on a player signed earlier this year.
• A loan deal with an option or obligation to buy is understood to be the most likely structure.
• Sevilla has intensified their interest after generating funds through recent player sales.
• City rivals Real Betis are also pushing to secure the striker, setting up a transfer battle between the two clubs.

Castellanos joined West Ham in January 2026 from Lazio for around €29 million. Although he could not prevent the club’s relegation, he made a positive impact, scoring six Premier League goals in 18 appearances and showcasing his movement, work rate, and ability to link play.

His performances kept him in Lionel Scaloni’s Argentina setup, making a prolonged stay in the Championship unattractive ahead of future international fixtures.

West Ham’s relegation has already sparked speculation about several of the club’s key players, with significant departures underway. Notably, Mateus Fernandes moved to Tottenham for £85 million, while Crysencio Summerville joined Al-Hilal for £65 million. Although Jarrod Bowen has extended his contract, a clause allows him to leave next season if West Ham fails to win promotion. Castellanos now appears to be the next big name on his way out.