Johnson let slip in an interview the Crowd Goes Wild Breakfast on Radio Sport that the NFL convert and Titans fullback would take part in the Nines next year.
"He's done a lot hasn't he? He's an awesome player and awesome athlete. We played him in his first game months ago and he smoked me," Johnson said.
Promoters Duco officially made the announcement this morning.
"I'm looking forward to it. It's going to be a great experience," Hayne told the Crowd Goes Wild Breakfast this morning.
Earlier this month Cowboys halfback Johnathan Thurston confirmed he would be attending the Nines.
The 33-year-old is widely considered the best player in the world, after guiding the Cowboys to their maiden premiership win last year and having achieved almost everything there is to do in the game.
The four-time Dally M and three-time Golden Boot winner was a frustrated spectator when the Cowboys took out the inaugural Nines trophy in 2014 and participating in the preseason tournament remains one of the last boxes to tick on Thurston's career bucket list.
"I'm excited about the Nines and I've got a really good buzz about it," he said. "It's [previously been] more about getting my priorities right, about what I wanted to achieve each year.
