Ethereum

Both Chelsea and Atletico Madrid signed an agreement with trading platform WhaleFin and Manchester City have OKX as their training kit partner.

Watford have previously had Bitcoin as a club sponsor and accepted the cryptocurrency at the club.

Last year, Spanish striker David Barral made football history when his move from Real Madrid to DUX International de Madrid was paid for using Bitcoin.

According to Uefa, the cryptocurrency sector has partly helped clubs to fill the revenue streams that were lost as a result of the pandemic.

But critics say there are concerns about the volatility of the crypto market - particularly that the plummeting price of tokens can expose fans to potential debts.