The Six Nations and Rugby Championship could introduce promotion and relegation as part of planned changes to the international game.
The back-and-forth between the Ospreys, Scarlets and PRB continued on Wednesday, with the Swansea region alleging a "stitch-up".
A look back at the best facts and stats from Kieran Read's career, as he prepares to step down from New Zealand duty.
The Scarlets say the Ospreys approached them last December regarding a possible merger, but the plans have been scrapped.
Kieran Read had been linked with Racing 92 and a Premiership switch, but said it was a "pretty straightforward" decision to move to Japan.
Kieran Marmion and Ross Byrne have been named in the Ireland squad ahead of the clash with France, but Robbie Henshaw and Dan Leavy... Read more
New Zealand head coach Steve Hansen says Kieran Read has enhanced the legacy of the All Blacks jersey in a "remarkable" career.
Kieran Read will head to Japan after the Rugby World Cup, ending his legendary career with New Zealand.
The Stormers confirmed late on Tuesday evening that John Dobson will be taking over the reins from Robbie Fleck as head of the Cape... Read more