RICHMOND star Alex Rance can't guarantee he will play on beyond 2019, with the premiership hero admitting he constantly considers when he should walk away from the game.

Rance nearly retired in 2015 when he was entering his prime before eventually agreeing to a four-year deal that expires at the end of next season.

He said last year that his retirement would be "a bit of an in-the-moment type decision" and he wasn't sure if a premiership would lengthen or shorten his career.

"Physically, I feel like I could play for a long, long time," Rance told News Corp.

"But am I going to play until my legs give out, or am I going to play until I want to pursue something else with as much hunger and passion as I do football?

"It’s a constant thing for me."

Rance was tempted to walk away from the game in 2015 because of travel and other interests including his faith as a Jehovah's Witness.

After re-signing, he went on to win the Tigers' best and fairest and has been named All Australian every year since, including as captain in 2017.

He said he lived his life "off the cuff" and did not have a plan laid out for the rest of his AFL career.

"I don’t want to set myself a 10-year plan and that, ‘You’ve got to do all these things’, because it’s like — where’s the excitement in that?" he said.

"I take every year how it comes and see how it feels, which is probably not what the club wants to hear. I’ve got this year and next year and who knows after that."