LONDON - West Ham have denied making "inconsistent" statements about the status of striker Carlos Tevez, whose move to Manchester United is in doubt.
Tevez's adviser, Kia Joorabchian, says the Hammers made "promises and assurances" about the 23-year-old Argentinian which they have not acted on.
But West Ham insist every document regarding them and Tevez has already been scrutinised by the Premier League.
Fifa is to look at the deal after West Ham and United asked them to intervene.
Tevez's move to Old Trafford is in danger of breaking down because the two clubs cannot agree a way forward. Tevez has been in Manchester since Tuesday night but West Ham refused permission for him to have a medical at Old Trafford.
Over the last six months West Ham have made repeated promises and assurances which they have not acted upon or performed. It is now time for these inconsistencies to be brought to an end. The Hammers insist they are still waiting to receive an offer for Tevez.
And the Premier League says a deal must be done between United and West Ham but not Joorabchian, who claims to own Tevez's economic rights.
A special "dispute resolution chamber" will be set up by Fifa, possibly within a fortnight, to effectively determine who owns Tevez - West Ham or Joorabchian.
Joorabchian said on Wednesday: "West Ham have provided private assurances while at the same time making contrary statements to the public at large. We can no longer allow these inconsistencies to continue unaddressed.."