Leeds have confirmed their players have not been paid their wages for June.
Administrators KPMG recently sold the crisis-hit club back to Ken Bates, but the sale has raised concerns at the Football League.
"It is disappointing they have not been paid but it is in accordance with agreements they entered into with the administrators," a statement read.
Professional Footballers' Association representative Mick McGuire said: "It's an absolute mess."
He added: "It needs to be resolved urgently because the players are reaching the end of their tethers.
"There are funds around so there needs to be some common sense to make sure the players get their wages.
"It's getting on for six weeks now and you cannot expect players to honour the terms of their contract when they're not being paid.
"No matter what people earn, you live your lifestyle to what you receive each month and you can't expect them to put their bodies on the line when they're not getting paid."
Thirty-two of the 36 players who were at the club in May agreed to a wage deferral after Leeds went into administration, and the club revealed they had now received their May pay.
Last week, the Football League asked for reassurances regarding the club's re-sale to Bates.
A League board meeting last Thursday withheld the transfer of Leeds' share in the League to Bates because of concern at the circumstances of administrators KPMG's decision to sell to him.
"June's wages are due to be paid when the Football League/Football Association return the shares," continued a statement from Leeds.
"Not withstanding the above, the club is talking to the Football League, PFA, and administrators to establish if this payment can be made in advance of the return of the share."