One of the sources involved in the Football Leaks scandal has claimed both Uefa and Fifa have failed to take up his offer to pass on evidence about the activities of the game's elite.

Rui Pinto, 30, from Portugal, is facing extradition to his home country after being arrested in Budapest, Hungary. He reportedly faces charges including an extortion attempt in 2015 on a secretive investment fund that had bet millions of pounds on the player transfer market.

In an interview with Der Spiegel, Pinto said he did not believe he would face a fair trial because the "football mafia is everywhere".

He told the German magazine, which broke a series of stories involving allegation of financial fair play breaches by Manchester City and Paris St Germain, that neither "Fifa nor Uefa contacted Football Leaks".

"This is frustrating," he said. "In my interviews using the pseudonym 'John,' I repeatedly made it clear that I would pass on documents in the interest of shedding light on the facts, if I was given a sign. I never received a single one."