Hayne quit the NFL on Monday in a bid to play rugby union sevens at the Rio Olympics later this year.
Speculation is rife he will return to rugby league next year, after leaving in 2014 to pursue his American dream.
Sydney Roosters, who are around $600,000 under this year's salary cap - money that could be used a sign-on fee for Hayne - remain the favourites to snare the former Parramatta superstar.
