"It's something I've been thinking about straight after the last fight. There were a lot of things happening in my personal life so it was hard to put a definite answer on it," Tua told Fairfax.
"Yeah, it's realistic. I'm going to try and sort out a few bits and pieces for next year and then make a definite decision."
In the latter stages of his career, motivation was an issue for the 52-5-2 Tua, who once unsuccessfully challenged Lennox Lewis for the world title in 2000.
But McRae insisted they were serious about pulling the 42-year-old Tua off the couch and said he trained the house down to get in shape for his 2009 bout with Cameron where he annihilated the Mountain Warrior inside two rounds.
"We've been having ongoing discussions with David," McRae told the Herald. "He's indicated strong interest that he would like to fight ... I think he's definitely serious."
Cameron has said if he was to lose to Meehan tonight he would hang up the gloves, while the 44-year-old Meehan is enjoying the twilight of his career.
McRae said someone like former WBC title challenger Chris Arreola was a name who could be enticed Down Under to meet Tua.
"[Tua] is a massive name; he's proven to be the premier prizefighter in New Zealand and I believe people would switch on to see if he still has it."
The Herald understands Tua has been telling people close to him that he has three fights left in him but the million-dollar question remains whether he has the desire to put himself through the required training to get in top shape.
Meanwhile, an emergency meeting was held this morning between the Meehan and Cameron camps, alongside the officials for tonight's bout, to determine who would walk out last.
Both fighters believed they should have been able to enter the ring second but a WBA official decided that Meehan's higher ranking, courtesy of respected website Boxrec, gave him the edge. Meehan is ranked 40th in the world to Cameron's 55th, as per Boxrec.
The winner of tonight's bout will claim the vacant WBA Pan African heavyweight title.