Arsenal are reportedly one of four major clubs, alongside Manchester United, Borussia Dortmund, and Liverpool, interested in Mainz midfielder Kaishu Sano. The 25-year-old gained attention for his performances for Japan at the World Cup, where he scored against Brazil. Liverpool are showing strong interest in a potential deal. Sano has two years remaining on his contract, and reports in Germany from March indicated that the Bundesliga club would only consider selling the defensive midfielder for a bid worth between €50-60 million (£43-52m). The midfielder has 16 caps and one goal for Japan and in the 2025/2026 Bundesliga season, he made 34 appearances, scoring one goal and providing three assists. His current Transfermarkt market value is €40.00m.