Wilson Isidor

In May 2026, available data lists a Transfermarkt value of €18.00m. This follows a January 2026 transfer window where Sunderland reportedly set an asking price of £25 million (approx. €30 million), which deterred interest, though Beşiktaş was reportedly prepared to pay €15 million. Earlier, in September 2025, at the peak of his form, Sunderland's valuation was said to be around £35 million (approx. €41 million), while his Transfermarkt value at the time was €12m. The player's move from Zenit St. Petersburg to Sunderland in February 2025 was completed for a reported €6.0 million.

Our valuation is driven by Sunderland's need to lower their reported January 2026 asking price of approximately €30 million (£25 million) due to Wilson Isidor's reduced playing time. The range is anchored by a reported €15 million offer from Beşiktaş and the player's current market value, while acknowledging Sunderland's desire to secure a significant profit on their initial €6.0 million investment.