Ross Lyon says Fremantle ruckman Aaron Sandilands can surprise the competition and play on beyond 2015.
Sandilands is playing on a one-year contract this season but is coming off an excellent 2014 in which he won his fourth All Australian honour.
After an injury-free pre-season, Sandilands played 23 games last year, which was his first season of 20-plus matches since 2010.
He also came second in the best and fairest to Nat Fyfe.
Lyon said the 32-year-old believed he could go on into 2016 - and possibly beyond.
"I think he'll surprise a few with his longevity," Ross said, as part of AFL Media's #AskTheCoach series.
"I'm sure he's thinking he's got a few more years yet."
Sandilands could play on into future: Lyon
Ross Lyon says Fremantle ruckman Aaron Sandilands can surprise the competition and play on beyond 2015