Kaishu Sano

Most recently, in May 2026, reports linked to Premier League interest valued the player at €50 million, a figure Mainz also reportedly plans to demand. In April 2026, it was suggested Mainz could target at least €60 million in a bidding war. Earlier, in March 2026, reports stated Mainz's minimum asking price was €25 million, which matched his Transfermarkt valuation at the time. A similar minimum demand of over €25 million was reported in November 2025. This follows his completed transfer from Kashima Antlers to FSV Mainz 05 in July 2024 for a fee of €2.5 million.

Our valuation is driven by multiple consistent reports from May 2026 valuing Kaishu Sano at €50 million, with Mainz reportedly targeting up to €60 million. This reflects his key player status, strong interest from multiple Premier League clubs, and a long-term contract until 2028, which gives his club a strong negotiating position. The valuation has clearly risen from earlier reports in late 2025 and early 2026 that cited a minimum asking price of €25 million, underscoring his rapid development since his €2.5 million transfer in 2024.