Thierno Ballo

In June 2026, reports indicated that Millwall considered a €3.5 million purchase option for the player too high, despite ongoing negotiations for a permanent transfer. This option was also reported in May 2026 as being approximately £3 million (around €3.5 million). A year prior, in August 2025, his market value was estimated by Transfermarkt at €5 million, and in July 2025, it was suggested a fee slightly exceeding €5 million would represent a record sale for Wolfsberger AC.

Our valuation for Thierno Ballo is primarily driven by the recent loan-to-buy option at Millwall. Reports from June 2026 clearly state that the English club found the €3.5 million purchase option too high, setting a firm ceiling on his current valuation. However, with negotiations ongoing for a permanent deal, there is clear interest at a lower price point. This is a significant adjustment from the reported €5 million market value from mid-2025, suggesting his perceived value has been recalibrated following his season in the Championship.