NRL club bosses will be asked how to overhaul the controversial third-party agreements system at a meeting next week after Todd Greenberg conceded the need for change in how player payments were made outside the salary cap.

The number of TPAs being registered with the NRL has been slashed since the Parramatta salary cap scandal, but the practice of the game's highest-profile stars receiving payments outside the traditional player payment pool has landed Manly in hot water with League HQ.

Advocate for change: Todd Greenberg says third-party deals need to be ''modernised''. Credit:JOEL CARRETT

And it is set to be a hot topic of debate among club chief executives at their first gathering of 2018 as the NRL looks to tighten the guidelines around TPAs.

Greenberg wouldn't be drawn on what an ideal system would like – if there should be one at all – but stressed there had been many challenges with the current model, which had plunged two of Sydney's highest-profile clubs into turmoil in recent years.