The Roos' raft of available talls may encourage coach Dean Laidley to stretch the Swans' backline by playing David Hale, Aaron Edwards, Drew Petrie and possibly Thompson in attack.
The 30-year-old, who has been sidelined with an ankle injury, was pleased with how the joint responded in his three-goal outing with VFL affiliate Werribee on the weekend.
"I got through well, really felt I was able to contest well, and I'll be putting my hand up for a spot this week," he said from Arden St on Tuesday.
Thompson has played 14 games and kicked 28 goals this season, but has lined up just once in the last seven weeks after rolling the ankle in his return from minor knee surgery.
If selected, it will be his first run in September since North Melbourne lost to Port Adelaide in the elimination final of 2005.
He missed last year's three finals in his recovery from a knee reconstruction, even though the club flirted with the idea of selecting him because of how well he was training.
Like 2005, the Roos carry the knowledge of sudden death into this clash with the Swans, but Thompson says excitement far outweighs anxiety.
"It's exciting, that's what it is," he reiterated. "Especially for me. I missed out last year on playing finals and playing a lot of footy.
"I'd love to get the opportunity to come back this week and try and contribute for the team."
Thompson also confirmed that his teammates had reacted positively to the weekend's 76-point loss to Port Adelaide, which saw fourth spot and a double-chance go begging.
"It wasn't great on the weekend, that was plain to see, but the guys are in good spirits," he said. "It's a new season now; we missed fourth spot and that's gone, [we] can't get that back.
"We've got a great opportunity to go up and play Sydney. Obviously they've got the home ground environment up there with all of the supporters and we, as a club, enjoy the challenge of that sort of thing.
"We'll be going up there and sticking together as a group and trying to come away with a big win."
And the Olympic venue holds no fears, with Thompson strongly dismissing a disadvantage of it being the club's first match there.
"The size of the ground is very similar, I think it's 160m long, which is the same length as Telstra Dome," he said. "[It's] a little bit skinnier, so it's no different. No different whatsoever.
"The way we play our game, if we're on the ball with contested footy and hard at it, and tackling and pressure, which are the things we do well as a footy club, when we're doing that we're very competitive."
