The 32-year-old is out of contract at the end of the season after signing a 12-month extension in June last year.
The former Tigers skipper hasn't set a timeframe on making a final call but he will sit down with the club in the coming weeks to discuss his future.
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"It's a conversation I need to have with the club, and I haven't had that yet," Newman told AFL.com.au.
"At the moment I'm concentrating on playing and getting my body right and being able to play each week.
"I'm hoping it will be an obvious decision if my body holds up well. So we'll just see how we go."
Newman is currently in his 13th AFL season, and has only managed 10 games this year after missing five weeks with a calf injury and another week with a groin complaint.
While the prospect of another gruelling pre-season isn't all that enticing, he says mental fatigue won't be a consideration when he contemplates carrying on into 2015.
"I don't look forward to pre-seasons too much," Newman said.
"But it's not really mental, it's more a physical thing. The body has held up well this year, I've had a couple of minor soft tissue injuries so hopefully they're just isolated incidents and I can get through the rest of the season."
In a season that has fallen well short of expectations at Punt Road, Newman said Sunday's 20-point win over premiership contender Port Adelaide was a clear highlight.
"No doubt [it's the best win of the season]," he said.
"It was going to be a really big challenge for us to beat Port, they're obviously a top four team. We feel like we've been playing some really good footy but haven't really got the reward for effort.
"But it was a really good win ... it means a lot to win that one."
