AHEAD of his 200th game this weekend, Adelaide midfielder David Mackay is in talks with the Crows about continuing on for a 13th season.

The 30-year-old played at least 19 games a season between 2012 and 2017, and is keen to play on next year.

"I certainly feel like there's more I want to contribute and achieve and I certainly have the drive to keep going and contribute where I can," Mackay said.

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"We're in discussions with the club at the moment, that's probably something that will play out in the near future obviously.

"I'm having discussions with the club about what next year looks like."

Mackay is off-contract having a signed a four-year extension in 2014.

Mackay has played 14 games this year, having missed one game with concussion and four with a rib injury.

He returned in last weekend's three-point win over Port Adelaide in Showdown 45, finishing with 16 disposals.

Mackay will become just the 16th Crow to play 200 games for the club when he lines up against Greater Western Sydney at UNSW Canberra Oval on Saturday night.

"It's pretty special," Mackay said.

"When I came here as an 18-year-old, the goal was to play one game, then go from there.

"I feel very privileged to be a part of this club and been a part of it for a long time and loved every minute of it."

The Crows can expect some reinforcements for their important clash with the Giants.

Veteran Richard Douglas (ankle) and forward Mitch McGovern (shoulder) got through training on Wednesday and should be available.

However, key defender Daniel Talia (corked calf) and runner Riley Knight (knee) remain in doubt after not training.

"Daniel and Riley will be given a little bit longer throughout the week," Mackay said.

"Going into a Saturday night game, they will have to do some training at the back-end of the week, but that's fine, nothing out of the ordinary with those two.

"Mitch and Richard trained really well today, so I'd imagine they'll put their hand up for this week."