Premier League chief executive Richard Scudamore has hit out at those who caused the third-party ownership scandal involving Carlos Tevez at West Ham.
Tevez and his fellow Argentine Javier Mascherano arrived at Upton Park in August 2006 while their contracts were partly owned by Media Sport Investment, a company formerly run by Iranian-born businessman Kia Joorabchian.
When both moved to other clubs, the Hammers received only a nominal fee.
In April 2007, an independent commission investigating the move found West Ham - who were kept in the top flight by Tevez's goals that season - guilty of lying to the Premier League over the third-party involvement and fined them £5.5 million.
The Hammers were also made to pay relegated Sheffield United £18 million, who went down as the Hammers stayed up on the final day of the season thanks to a Tevez winner at Manchester United. Soon afterwards, the Premier League outlawed third-party ownership completely.
"It is quite simple - you are completely undone by an act of bad faith," Scudamore told Bloomberg in a TV interview.
"If a club, through its executives, chooses to lie straight to your face, there is a great deal of damage that can be done from that.
"Ultimately, the Tevez saga goes down to people not being honest. With any regularity body, if people are not honest there is very little you can do about it and that is why the whole thing unravelled.
"It ranks up there as the number one act of bad faith that any club has ever done towards me during my time here. After that, it was dealt with under our rule book and the rest is history."
The Premier League has also gone to UEFA to try to ensure that such moves cannot happen in the rest of Europe, but Scudamore is pleased they have been stopped on his own doorstep.
"When you consider what certain Football Associations get fined for racist abuse in Europe, £5.5 million is a huge fine," he added.
"Our rules say that, if you break them, then a commission hears the case and decides. We are glad English football has stopped these transactions happening."