COLLINGWOOD ruckman Darren Jolly has dismissed concerns over a nagging groin complaint, declaring himself "100 per cent" fit for Saturday's Grand Final.

Jolly struggled to run out the Magpies' preliminary final win over Hawthorn last weekend, prompting fears he could miss the decider against Geelong.

However, the 29-year-old completed training during the week and was one of the first players on the track for the club's final run at Gosch's Paddock on Friday.

On Wednesday, midfielder Dayne Beams made the difficult decision to rule himself out of the clash with the Cats because of a groin injury.

Jolly said he would've followed Beams' lead if he didn't think he could finish the game.

"I was fine at training today. I was 100 per cent," Jolly said at the Grand Final parade on Friday.

"If I wasn't fit I wouldn't be playing. I'm full of confidence I can get through the game and play my role for the team.

"I'm ready to go."

All Australian defender Ben Reid, who is also battling groin soreness, trained alongside Jolly on Friday morning and should take his place in team.

The 22-year-old said he was never in doubt to play in his second Grand Final.

"I felt great today and I've trained all week," Reid said.

"I knew as soon as the game finished last week that I would be right to play."

Geelong will wait until Saturday morning to make a final decision on forward Steve Johnson (knee), who trained with the aid of a pain-killing injection on Friday, but Magpies coach Mick Malthouse was able to make calls on both Jolly and Reid after training on Wednesday.

"We needed to know on Wednesday, for the mindset of the players who were tested and the players who may have come in," Malthouse said.

"We're comfortable that on Wednesday we went through the process with both players and they're 100 per cent as we certainly expected Ben Reid to [be].

"We didn't know [as much] about Jolly. Jolly's was a minor injury and it was treated as such until Wednesday when he went hell for [leather].

"He tracked beautifully right up until then and trained and just kept going up.

"Come Wednesday afternoon he'd ticked the box, and waking up the next day he thought 'What's the issue'?"

Jolly, who was a member of Collingwood's premiership-winning team last year and also won a flag with the Sydney Swans in 2005, will make his fourth Grand Final appearance on Saturday.

The former rookie said the novelty of playing in the decider hadn't worn off.

"You know what to expect a bit having been there and experienced it a few times before, but it's still exciting," he said.

"Hopefully, I can make it three our of four [Grand Final wins]."

The views in this article are those of the author and not necessarily those of the AFL or its clubs