A $1.9 billion broadcasting deal, together with sponsorship, taking the NRL's rights fees to more than $2 billion is expected to be revealed on Thursday afternoon.
All eight NRL games will be shown on Fox Sports each weekend, with the the pay TV broadcaster to simulcast the three matches broadcast on Channel Nine.
Telstra has retained digital rights via mobile phone and tablet, but Nine has streaming rights, which it bought as part of an announced $925 million deal in August.
Although the five-year deal was due to begin from the 2018 season, it may start a year earlier.
This would possibly free clubs of the unpopular Monday night game on Fox Sports.
The stand-off between the NRL and News Corp over pay TV rights for 2018 to 2022 was resolved when Fox Sports agreed to pay nearly $40 million a year for a prime-time Saturday night game acquired by Nine as part of the August free-to-air agreement.
Telstra is also expected to retain the naming rights for the NRL premiership, while the New Zealand broadcast rights could yield up to $150 million more.
News Corp chief executive Robert Thomson is understood to have flown in to Sydney to head up a marathon round of talks on Wednesday night with ARLC chairman John Grant and fellow commissioners Graeme Samuel and Jeremy Sutcliffe.
Nine and Telstra were also represented.
A meeting of the ARL Commission has been convened to discuss details of the deal, which will see the status quo remain, three free-to-air games on Nine and five matches shown of Fox Sports, until the end of the 2022 season.
A leading media rights consultant declared it "a great deal for the NRL and Fox Sports".
It is also a great deal for Nine if it pays only $625 million for Thursday, Friday nights and Sunday afternoon matches, as well as the priceless State of Origin series and streaming rights.
Fox Sports also gained an assurance that NRL control of programming would not mean a devaluing of the games it has acquired.
The NRL is expected to call a press conference to trumpet the record deal on Thursday afternoon.