Everyone in rugby league has a "use-by date", according to Gorden Tallis - even Wayne Bennett.
Brisbane legend Tallis believes the NRL club should be looking at all their options for when the veteran coach's contract expires at the end of next season.
Bennett was reportedly knocked back last week after approaching the Broncos board asking for an extension to his current deal, suggesting the 2020 campaign could herald a new era for the team.
Tallis reckons the board was well within their rights to rebuff him.
"You don't extend coaches that far out," the three-time Brisbane premiership player said at Fox League's retro round launch on Tuesday.
"He's not Payne Haas, he's not 18.
"Everybody has a use-by date.
"I had it as a player at the age of 30. Some coaches have it earlier, some have it later.
"What he's achieved has been unbelievable but, like players, you'd rather retire a year early than a year too late.
"And he's given that advice to a lot of players."
The Broncos are clearly planning for life without Bennett, who turns 69 next year, having tried and failed earlier this year to lure Craig Bellamy north from the Melbourne Storm.
Other reports indicate CEO Paul White is keen on South Sydney coach Anthony Seibold whose contract, like Bennett's, expires at the end of 2019.
"It's going to be tough because of what he's achieved in the game but if there's someone better for the job... they've got to plan to move forward," Tallis said.
"Craig Bellamy was better for the job. It's simple as that.
"If they keep on winning, get to the finals and have a great year and next year (Bennett) coaches exactly the same, they've got a decision to make.
"But Wayne will make the right decision - maybe he'll want to go live in England, he's coaching their side now, or down in the south of France. Who knows?"
Broncos skipper Darius Boyd, who has played his entire NRL career under Bennett at three different clubs, would prefer to see him keep coaching into his 70s.
"All good things come to an end at some point," Boyd said.
"I'd love to see him stay on. If he's got the desire to keep coaching... in my eyes he's the best to ever do it."