South Sydney are on a collision course for a finals showdown with their arch rivals, the Roosters.

The pressure will be enormous for all players, none more so than Rabbitohs forward Angus Crichton, who will be locking horns with the team he will join 2019, if results go as expected in this weekend's final round.

He welcomes the spotlight that will beam onto him if that happens.

"That's good. Pressure is fun. I enjoy pressure. It's one of the things you train for, and practise for," Crichton said.

"For me, it's one of those things that can set you apart from your opponents, is how you handle the mental pressure, how you get on with the job at hand.

"There's always that rivalry between Souths and the Roosters, and for me personally now and my situation that rivalry is even closer to home.

"Add that to the fact it's a final and the pressure is amplified by a hundred."

As his time with South Sydney draws to a close, Crichton is soaking everything in, especially the remaining games alongside Greg Inglis.

Rabbitohs second rower Angus Crichton.
Rabbitohs second rower Angus Crichton. ©Grant Trouville/NRL Photos

The pair will never be playing in the same State of Origin team so unless Crichton cracks the Australian Kangaroos, his time of being around Inglis can be measured in games now: five at the most.

"For me it's my last month at the club so I want to relish every opportunity I get to play alongside him," Crichton said on Tuesday as the Rabbitohs prepare to play Wests Tigers on Thursday in their final Telstra Premiership club game of the season.

Inglis returned last round for the Raiders game after seven weeks out with a broken thumb.

"You saw at the weekend, the boost that he brings when he comes back. He's such a class player," Crichton said.

"To put together that performance after six or so weeks out is pretty unbelievable. He'll only build coming into the finals so hopefully he'll lead us to a few victories."

He certainly will if he keeps producing stats like he did against Canberra, despite the loss. Inglis ran for 140 metres, had 61 post-contact metres, six tackle breaks, six offloads and made 35 tackles.

"He's a massive boost to our team as he's one of the best to ever play the game," Crichton said.

Rabbitohs prop Tom Burgess agrees Inglis will be key to Souths snapping their three-match losing streak, so they can sneak in a win before finals time.

"Greg had a lot of energy in that game, just talking to us and what he did playing. It's what you expect from a captain – he's worked really hard," Burgess said.

"You don't want to pin all your hopes on one player but those sorts of players give confidence to a lot of others. So Greg brings confidence to the players around him – makes us all play a bit better."

Crichton said he would miss the camaraderie he had developed with South Sydney's players.

"Some of my best mates are here at this club. I love wearing these colours; I love playing in this team and with these boys for the community and people here at South Sydney.

"I want to make sure I make the most of every opportunity left and don't take anything for granted.

"I'm not counting down the days but it's no secret it's my last season here and my last opportunity with these boys."