Mark Flekken

In March 2026, reports mentioned Bayer Leverkusen had acquired the player for €11 million. This followed his completed transfer from Brentford to Bayer Leverkusen in July 2025 for a fee of €10 million. Rumours leading up to that move in June 2025 cited a rejected €9 million bid and a separate report of an £11 million (~€13 million) deal. In May 2025, his expected fee was reported to be between €10-€14 million, with some sources suggesting a potential €15 million fee and a Transfermarkt valuation of €10 million. Earlier, in March 2025, he was linked with PSV for an estimated €10 million. His prior completed transfer was from SC Freiburg to Brentford in July 2023 for €13 million.

Our valuation is driven by Mark Flekken's recent transfer from Brentford to Bayer Leverkusen in July 2025 for a confirmed €10 million. This is corroborated by numerous reports from that period suggesting a value between €10-€14 million and a more recent March 2026 rumour mentioning an €11 million fee. Given his consistent performance and long-term contract, his value has likely remained stable since that move.