Chelsea chairman Todd Boehly is reportedly co-owner of an 'unauthorised' website that takes part in the reselling of Premier League tickets to foreign tourists.
Boehly, 51, who is also a co-owner of the Blues, is an investor and director of Vivid Seats, an online marketplace based in the US.
Users and fans based in the UK cannot buy or sell tickets on the platform, with it made a criminal offence to resell tickets for football matches following the Hillsborough disaster in 1989.
However, according to a report in The Telegraph, Vivid Seats has allowed foreign-based users to re-sell tickets to Chelsea games among others for tens of thousands of pounds, with the platform said to take a 10 per cent commission and hefty service fee of the original ticket price.