Sky Sports News sources understand Crystal Palace players have not received their wages for December.
Cash-flow problems prevented the Championship club from paying the wages of their staff and players on time at the end of November.
The matter was resolved but Palace have now encountered the same trouble for a second month.
It is understood the players will receive their wages at some point next week.
Palace manager Neil Warnock gave his full backing to chairman Simon Jordan last month, saying he would continue to support him through a 'difficult period'.