Kia Joorabchian has criticised the Premier League's handling of the Carlos Tevez saga and is willing to fund an new inquiry to resolve the matter.
Joorabchian says all the facts in the Tevez case have yet to be divulged
Joorabchian, who represents Tevez, is upset with the lack of "transparency".
He has also accused Premier League chief Richard Scudamore of dragging "me, my players, West Ham and the Premier League through the mud".
He added: "That's why I want a proper independent inquiry and I'm willing to finance it, whatever it costs."
The Tevez case concerns the issue of third-party agreements, which are banned under Premier League rules, and whether West Ham gained an unfair advantage by playing the Argentine striker at the end of last season.
The saga has rumbled on for several months and has led to numerous claims and counter claims from all parties involved.
It looked as though it had been resolved earlier this month when Tevez signed for Manchester United.
But Sheffield United kick-started the row again on Thursday when they announced they were taking legal action in order to gain compensation from West Ham.
The Blades argue that the Hammers have been less than truthful about their dealings over Tevez and want between £30m and £50m from the London club.
That is the amount they claim they have missed out on following their relegation from the top flight.
Tevez celebrates his goal in the 1-0 win over Manchester United
West Ham, who deny Sheffield United's claims, beat the drop by three points, defeating Manchester United 1-0 at Old Trafford on the final day thanks to a goal from Tevez.
But the outcome may have been very different had they not escaped a points penalty for breaking Premier League rules over the signing of both Tevez and countryman Javier Mascherano.
They ended up being fined £5.5m instead - a decision which angered Sheffield United and several other Premier League clubs.
What's more, the Hammers were allowed to continue playing Tevez, whose goals proved crucial in keeping them up, after insisting they had cancelled his third-party ownership with Joorabchian.
However, Sheffield United dispute whether that had been done, prompting their repeated calls for justice.
Let's have total transparency, Mr Scudamore
Now Joorabchian has weighed into the debate again, with the Premier League chief Scudamore bearing the brunt of his criticism.
"Let's have total transparency, Mr Scudamore," urged the Iranian businessman.
"Why was a full, transparent and thorough investigation not done when your member clubs have a right to know what has happened?
"Why are they (the Premier League) clouding this issue? Why were the full facts not heard? Why were people not questioned?
"They never once asked us about any paperwork, never held discussions with us, never wrote us a letter. How did they decide on a £5.5m fine with only 50% of the facts."