The Football Association and the Premier League are to launch a fresh invetigation into the Carlos Tevez affair.
West Ham were found guilty of having broken Premier League rules regarding their acquisition of Argentine duo Javier Mascherano and Tevez.
While the former joined Liverpool Tevez played an instrumental role in the Hammers preserving their Premiership status.
West Ham were initially fined £5.5million for breaching laws regarding third-party ownership, but escaped a points reduction.
Sheffield United, who filled the final relegation spot, were unhappy with that ruling and sought financial compensation as a result of what they deemed to be an unfair demotion from the top-flight.
An independent tribunal later ruled that Tevez was ineligible to play for West Ham in the 2006-07 season.
A statement read: “The Premier League and the FA are to institute a joint inquiry into the views expressed by the Independent Arbitral Tribunal chaired by Lord Griffiths in September 2008, which dealt with a compensation claim by Sheffield United against West Ham United brought under FA Rules.
“The joint inquiry will examine whether the conduct of West Ham United immediately after the Independent Disciplinary Commission’s decision of 27 April 2007 amounted to further breaches of Premier League or FA Rules.”
The Hammers, who could face further disciplinary action, have vowed to ‘co-operate fully’ with the investigation.
“West Ham United will co-operate fully with the joint inquiry convened by the FA and Premier League,” read a statement on the club’s official website.
“We have acted in good faith throughout the various inquiries and investigations into this matter and fulfilled the undertakings given to the Premier League following the initial penalty.
“We have nothing to hide and will ensure that this is once again reflected in our evidence to the FA and Premier League.”