Walters wants Docker Ballantyne to play on

Milestone man Michael Walters would love Hayden Ballantyne to play on next season, but first he wants to send out retiring ruckman Aaron Sandilands with a win.

Sandilands will farewell Dockers fans in Saturday night's AFL clash with Essendon at Optus Stadium, with Walters celebrating his 150-game milestone.

Ballantyne is out of contract at season's end and the 32-year-old faces an uphill battle to earn a new deal.