Benji Marshall backs his body to play on in 2022

Benji Marshall has given the best indication yet he will continue into a record 20th NRL season, declaring his body feels good enough to play on.

In a stunning twist to what many have billed as Marshall's grand-final farewell against Penrith, the South Sydney star on Tuesday indicated he was far from hanging up the boots after 346 games.

He also revealed his future may not necessarily be at the Rabbitohs, willing to go on the market again if South Sydney aren't interested in keeping him.

Regardless of what his options are for 2022, Marshall is adamant he is not retiring for now.

"Put it this way: The way my body feels right now, I could play next year for sure," Marshall said.

"I'll weigh all those things up at the end of the season. I will give after this weekend a bit of time for it to sink in.

"I think I have done a really good job in the last few years of playing every game as if it is my last.

"And then at the end of the season making a decision on what I am feeling. It's not going to be any different this year."

If Marshall did go on, he would go past Cameron Smith and Paul Gallen to become the first man to play 20 straight NRL seasons.

It comes just days after Wayne Bennett virtually retired Marshall, stating there would be no better way for him to go out than with a grand-final win.

But the 36-year-old doesn't agree with the man who has now saved his career twice.

"If you've still got the desire and passion to play and you want to play, why not?" Marshall asked.

Marshall has also not contemplated where his future could lie, telling his manager to take any offers seriously and consider them at season's end.

Souths have signed Anthony Milford for next season and he could play a similar role to Marshall, but his future is clouded after being charged with assault.

"It doesn't have to be at South Sydney," Marshall said.

"But I'm just focused on this week, you have to be in it this week, you can't be focusing on what's happening next year."

There is no doubt Marshall could continue to be an asset to Souths on a cut-price deal.

Sixteen years after his last grand final with Wests Tigers, Marshall has morphed himself into an ideal No.14 in a faster game that suits the role.

The advent of concussion checks has made the position necessary, while the likes of Marshall and Dylan Walker have made the No.14 a threat in the middle.

"What's funny, all the positions I've had to play are easier than playing in the halves," Marshall said.

"In the halves you have to control the field, everyone in position.

"In the forward pack my job is so easy, I just need to get it to Cody Walker.

"I love the role and who knows, I think it's revolutionised the position."