Warriors fullback and captain Roger Tuivasa-Sheck is reportedly considering a move to rugby union ahead of the 2019 world cup in Japan.

The former New Zealand schoolboy rugby representative has one year left on his current contract with the Warriors, and according to his manager Bruce Sharrock, the 24-year-old is giving it serious consideration.

"It's entered discussions, I'm not going to deny that," Sharrock told Fairfax Media.

"We've talked about it and we've certainly talked about it before.

"That's his background, the All Blacks are a world-recognised team with an amazing success rate. If you thought you were good enough to be a part of it, it's not a bad ship to be a part of."

Tuivasa-Sheck joined the Warriors from the Roosters ahead of the 2016 NRL season. He told the Sydney Morning Herald at the time that he had turned down an offer from New Zealand Rugby.

The former Otahuhu College student has already won the NRL premiership, and Sharrock believes if he is to make the switch to rugby, it makes sense for it to happen now.

"He's at a stage in his career where if he is going to [switch codes], it's probably going to be sooner rather than later. Not many people can shift later in their career, it makes it very tough."

Former Warriors player Ngani Laumape switched to rugby union in 2016 and made his All Blacks debut this year after a standout season for the Hurricanes, while former Melbourne Storm player Matt Duffie was named in New Zealand's 37-man squad for the end-of-year tour.

Sonny Bill Williams also had a career in rugby league before moving to union.

Newshub.