FC Brentford is interested in Kaishu Sano, a 25-year-old Japanese midfielder who plays for Mainz 05. Eintracht Frankfurt has also targeted the player. If the English club decides to intensify its search for a new defensive midfielder, Sano would be a high-priority target. A transfer could happen in the summer, two years before his contract is set to expire. It is reported that Mainz is asking for a minimum of 25 million euros for the player, who is considered a key player. He has not missed a single minute in the current Bundesliga season and was originally signed from Japan in 2024 for 2.5 million euros. The midfielder has 11 caps for Japan, and his market value is currently listed as €25.00m by Transfermarkt.