It is not felt within Pride Park there is much chance of the claims being successful.

However, the mere fact they exist is preventing the administrators from naming a preferred bidder for the club, which they said on Christmas Eve was "imminent".

It is understood none of the three current interested parties are willing to commit to buying the club, knowing they could be facing a liability running into millions of

The administrators had hoped to 'compress' the liability but unless the EFL changes the status of the debt, it cannot happen because all football-related sums must be paid in full.

The administrators are arguing the claims do not fall within the normal 'football-related' agreements over issues such as transfer fees and ticket sales.

However, the EFL says they do, in the knowledge that Middlesbrough's legal victory over Liverpool in 2002 over the transfer of Germany international Christian Ziege was regarded as a football debt.

The administrators feel the EFL's present rules are out of date because they do not take into account preferred creditor status.

Faced with a lengthy legal fight which could take months, during which time Derby will need to sell players or borrow more money to keep playing, the belief is if the administrators do not receive clarity within the next week, they will ask for a legal ruling.

The only other option is to reach a financial agreement with Middlesbrough and Wycombe, although where the funds for this would come from is not clear.

The idea of using funds intended to pay part of a £28m liability to HMRC has been dismissed as a non-starter.

The EFL published an 11-point question and answer with chief executive Trevor Birch on the situation at Derby on Monday.

The EFL asked Derby's administrators last week how they intend to continue trading to the end of the season amid increased fears for the club's future.

Birch said that "potential funding options" were tabled by the administrators but they could not provide the "necessary assurances" that the funding to enable the club to finish the season was guaranteed.

He added that the EFL had extended the deadline for the provision of the funded plans until 1 February.

Birch said that the proceedings involving Middlesbrough were confidential and that the EFL had not received details of the claims from Wycombe Wanderers.

"We are aware that Derby County consider the claims to be spurious, but despite this, the current bidders appear unwilling to assume the risk of defending them," he said.

He added that the EFL was "keen to try and resolve the current impasse" and that it was now reviewing submissions from Derby's administrators, Middlesbrough and Wycombe Wanderers to find a solution.

Derby withdrew a contract offer for veteran defender Phil Jagielka on Friday. Jagielka has since joined Stoke. Scotland midfielder Graeme Shinnie joined League One Wigan on Sunday.

The added uncertainty comes at a time when the club are performing superbly on the field.

Saturday's win over Sheffield United saw Wayne Rooney's side move off the bottom of the table and eight points from safety, despite having 21 deducted this season.