"I don't know who has tossed that up," Mannering.
"The NRL has nothing to do with the World Cup. The World Cup is a totally separate entity and the only thing that will hurt are the guys that are at the lower end that get a chance to play for their country and play at the World Cup.
The World Cup is the major source of revenue for the RLIF and the profits from the tournament will be used to fund the game in developing nations for the next four years.
While Mannering said there was a possibility that players could take some sort of industrial action if negotiations with the NRL drag on, the former Kiwis captain would never contemplate damaging the World Cup, which will be co-hosted by Australia, New Zealand and Papua New Guinea from October 27 to December 2.
“There are other ways we can try and get our point across."
By Brad Walter | @BradWalterSport
Chief Correspondent, RLWC2017