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Kaishu Sano transfer negotiations

Updated 3 times since CLSTR started tracking revisions of this situation.

What changed

2026-09-01 22:42 UTC → 2026-09-02 00:07 UTC · added ~~removed~~

As the Bundesliga transfer window drew to a close in late August, the future of Kaishu Sano remained uncertain. Mainz 05 had established an August 27 deadline for negotiations to ensure the club could secure a successor if the Japanese midfielder were sold. While interest had been linked to several clubs, including Liverpool, Newcastle United, and RB Leipzig, concrete negotiations at the club’s required valuation levels had not materialized. On the final day of the transfer window, Mainz 05 ~~reportedly~~ rejected a transfer offer of approximately €30 million from an unnamed Premier League club. Although some reports, including from the BBC, suggested Crystal Palace had entered negotiations, no agreement was reached. Further details emerged regarding the rejected bid from Crystal Palace, which was reportedly in the region of €30 million (approximately £24 million). Despite Crystal Palace reportedly having a private jet waiting at Frankfurt Airport to facilitate the move, negotiations failed. Mainz officials, including sporting ~~director~~ CEO Christian Heidel, declined the offer because the club was unwilling to let the key player depart without sufficient time to find a replacement. Some reports suggest Mainz was seeking a valuation closer to €60 million. Christian Heidel confirmed that Sano will remain with the team and is expected to stay through the 2026/27 season. The 25-year-old, who joined Mainz in 2024 and is under contract until 2028, remains a key player for the Bundesliga side.

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