Western Sydney Wanderers players are set to refuse to compete at the Club World Cup over a dispute with the club over the prize money share.
The AFC Champions League winners were due to depart for Morocco on Sunday, a day after suffering a 2-0 loss to Adelaide United.
But that has been thrown into doubt, with the players unhappy over the distribution of prize money.
Professional Footballers Australia chief executive Adam Vivian said there was still time for a resolution to be reached.
"The players have made every attempt to reach an agreement on a fair and equitable share of the prize money," he said in a statement.
"Despite these intentions the club has consistently refused to negotiate in good faith.
"Throughout this process the players have proposed a number of solutions to assist in coming to a resolution, including mediation and arbitration.
"However, the club has been unreceptive and unwilling to work towards an agreement that sees the players fairly remunerated for their success in reaching the tournament as the champions of Asia or reflects their increased workload.
"As a result of this the players, with the full support of the PFA, have unanimously taken the decision to consider their participation in the tournament.
"The players and the PFA remain committed to sitting down with the Wanderers management to negotiate an acceptable outcome for all parties."
The Wanderers are due to play Mexican side Cruz Azul in a week's time before a potential meeting with European champions Real Madrid.comments