"He's obviously not playing American football now, and he wants to go to the Olympics. That is quite special for some players, so perhaps he'll be there, I don't know."
Fiji are currently leading the World Sevens Series standings going into the final tournament of the circuit in London, sitting on 166 points from nine tournaments and in pole position to take the 2015/16 Series title.
A medal for the Fijian Sevens side at this years Olympics in Rio would be Fiji's first ever Olympic medal of any kind, and Hayne could be the decisive player to make that happen.
Hayne played one season in the NFL for the San Francisco 49ers, having left the Parramatta Eels and the NRL in Australia as one of the best rugby league players in the world.
The London leg of the HSBC World Sevens Series runs from 21-22 May, with New Zealand in the same pool as Brazil, Russia, and Argentina, while Fiji are grouped with England, Wales and Australia.