Four A-League clubs including Central Coast look to have dodged a bullet, with the players' union receiving correspondence saying outstanding payments to players have been made in the nick of time.

The Mariners, Brisbane Roar, Adelaide United and Newcastle Jets have been under pressure from Professional Footballers Australia (PFA) to pay overdue entitlements by the end of the year or face the possibility of player walkouts, transfer embargoes or points deductions.

Under the new collective bargaining agreement ratified by the union and Football Federation Australia earlier this year, the deadline for overdue payments is December 31.

Any player whose entitlements have not been paid fully can put their club on notice at any time, giving the franchise a mandatory 14 days to remedy the situation.

If the situation is not resolved, the player is then able to terminate their contract.

The new CBA also allows for new sporting sanctions, which include transfer embargoes and points deductions, to be imposed.

The outstanding entitlements differed from club to club but included superannuation, match payments, bonuses and transfer fees.

PFA's biggest concern had been the cash-strapped Mariners, whom they said had fallen far behind on some superannuation payments.

However the union said on Thursday it had been informed by all four clubs that payments had been made, and hoped to confirm this was the case early next week.

The one exception is the complex situation at the FFA-owned Jets, as there are still some outstanding payments from the turbulent Nathan Tinkler era.

PFA said the FFA is working to resolve those issues.

AAP