Sheffield United believe they have a strong chance of winning a favourable verdict over the Carlos Tevez affair.
The Blades have a High Court date on Friday after an arbitration panel upheld the decision not to dock West Ham points over the striker's signing.
The Hammers were fined £5.5m for their handling of Tevez's move and that of his fellow Argentine Javier Mascherano.
But Sheffield United hope documentation from Kia Joorabchian, the duo's representative, can help their cause.
Club lawyers have been in touch with Joorabchian, who is prepared to hand over all the documentation relating to Tevez's contract if Friday's High Court ruling goes in favour of Sheffield United.
A source close to Joorabchian said: "If the judge rules all the paperwork must be made public we will be forced to co-operate.
"We have no idea how significant the paperwork may be. All we know is we have done nothing wrong."
It is understood the documentation could potentially be harmful to West Ham's case and in the long run that may go some way to helping settle the contractual wrangle which is holding up Tevez's transfer to Manchester United.
But Joorabchian would prefer for the matter to be settled out of court.
West Ham were found guilty on 27 April of acting improperly and withholding vital documentation over the duo's ownership.
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When Tevez and Mascherano were registered as players, West Ham failed to disclose that they had entered into an agreement with third-party companies.
Sheffield United had launched their first appeal after they went down on the last day of the season and West Ham stayed up.
The three-man arbitration panel, headed by retired High Court judge Sir Philip Otton, did not have the power to change West Ham's punishment but could have ordered a new independent commission to judge the case.
The Blades are set to claim the arbitration panel made an "error in law" by not ordering a new disciplinary commission to deal with the affair.
And while chairman Kevin McCabe has accepted the club will not be reinstated to the Premier League he is looking for up to £50m in compensation.
"I think anyone who looks at it and says one club has been wronged then the only recourse to make that wrong right is financial," he added.
"If you say that the Championship play-off game is worth £60m and Sheffield United's attendance last year was 31,000, with full hospitality boxes and restaurants and broadcasting income, you would say compensation is around £50m."
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