Geelong coach Mark Thompson is thrilled rather than daunted by the selection pressure he faces ahead of a preliminary final with Collingwood at the MCG on Friday night.

Running defender Andrew Mackie, a regular all season who was dropped for the Cats' huge semi-final win over Fremantle last weekend, now finds himself trying to get back into a winning side.

But his replacement Tom Lonergan has been guaranteed a place by Thompson after a good performance against the Dockers.

That means dual premiership player Mackie may have to rely on the misfortune of others to win back a place in the Cats' best 22 to take on the Pies as they attempt to make their fourth consecutive grand final.

Thompson said he was pleased to have players fighting for spots, though he did warn natural attrition may yet ensure he didn't have to make the tough call at the selection table.

"That's a great thing - I'd much rather it be that way," Thompson said on Monday of having selection pressure.

"It's not a bad situation to be in. It's a good situation.

"It's still very early in the week. We have got a few sore boys, and it's Monday - you never know what might happen."

Thompson is confident forward James Podsiadly, who had a minor knee problem arise in last weekend's match, was on track to play against the Pies.

Midfielder Paul Chapman, who picked up a minor cork in his leg, is also expected to play.

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