European football’s €25M transfer highlights crypto’s unfinished business in sports

Stade Rennais FC and Sunderland AFC are finalizing a transfer deal worth approximately €25 million for 21-year-old forward Eliezer Mayenda. The deal, which includes performance bonuses, is expected to close quickly as both clubs push to wrap things up ahead of the new season.

The deal itself

Mayenda first moved to Sunderland in July 2023 from FC Sochaux for a fee slightly above €1 million. That original transfer included a 25% sell-on clause benefiting his former French club.

If the €25 million headline figure holds, Sochaux stands to pocket a meaningful slice, roughly €6 million or more depending on how the sell-on is calculated against add-ons.

Mayenda’s contract at Sunderland runs through June 2030. A €25 million price tag, roughly 25 times his original transfer fee, reflects both his development trajectory and Sunderland’s bargaining position.

Where crypto should be, but isn’t

Neither Rennes nor Sunderland has established any official fan token or blockchain partnership. Mayenda himself has no publicly documented involvement in crypto assets, tokens, or NFTs. The entire €25 million transaction is unfolding through traditional sports financing channels.

Fan tokens exist for clubs like Paris Saint-Germain, Barcelona, and Juventus through platforms like Chiliz and Socios.com, but they function more like loyalty program points than genuine financial instruments. Trading volumes on most fan tokens have cratered from their peaks, and the governance rights they offer are typically limited to choosing bus designs or warm-up playlist songs.

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