A few weeks ago

FC Barcelona Chooses Spotify Over Crypto Sponsors

FC Barcelona Releases Its Cryptocurrency - Medium

A few weeks ago, the news also emerged that Binance and FTX were also vying for the main space on the Barcelona shirt, but apparently, the negotiations have not

It was

Binance in talks with FC Barcelona over sponsorship

Polkadot could be Barcelona's new master sponsor

It was, but Barcelona decided in the end not to go with anybody in the crypto space.

Was Polkadot really in the race to become one of Barca's sponsors?

Polkadot Could Become FC Barcelona’s Official Jersey

Polkadot In Race To Become FC Barcelona’s Official