As you know the sport's industry is very usefull for advertising reasons in everything at this life.
So if a team uses bitcoin to buy a player will be a huse boost for our crypto.
But was the 1st case??
On January 2018 a Turkish team which name is Harunustaspor bought a player which his name was Furuk Kiroglou (22 yo) where the player received 0.0524 in Bitcoin ( pound 385) and turkish 2,500 ( pound 470).
The sure now that Mr Furk is about 10 times richer with this transfer if he kept his bitcoin ;)
Here you can find more information https://www.natlawreview.com/article/future-sports-cryptocurrencies-and-blockchain-technology
PS the photo was taken from https://sportslens.com/from-buying-to-betting-how-football-is-embracing-bitcoin/284182/