Europa League final tickets are being sold for up to £23,000 via a company that Chelsea chief Todd Boehly part owns.
The final of Europe's second-tier competition has drawn major attention because two English teams will be contesting it - Manchester United and Tottenham - in a bid to qualify for a better competition next season.
It has also generated extra interest because the winner of the game will earn a spot in next season's Champions League - despite the two sides currently sitting 16th and 17th in the Premier League respectively.