Sezer will look to back up what coach Ricky Stuart dubbed his "best game for the club" when the Raiders take on the Wests Tigers at Canberra Stadium on Saturday.

His standout performance on the road last week came days after the club officially announced the looming arrival of England Test halfback George Williams.

It could leave the club facing a salary cap squeeze with Sezer and five-eighth Jack Wighton both contracted for another season, while the Raiders are keen to keep Sam Williams on the books.

He and Ata Hingano are off-contract at season's end as the Raiders prepare to welcome another Englishman to the club on a three-year deal.

But Sezer is refusing to speculate on what next season may hold in store for the club's halves as he sets his sights on the Green Machine's charge towards the finals.

"It doesn't affect what I'm doing, I'm just focusing on the next 12 weeks. Things like that are out of my control," Sezer said.

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Sezer has rebounded from a stint in reserve grade to make the No. 7 jersey his own as Canberra edge closer to a return to finals football.

But the 28-year-old has little time to sit back and reflect on the weeks that were as Canberra emerge as a genuine premiership contender.

"That's in the past now. All I can do is look forward to the future and make the most of these next 12 weeks," Sezer said.

Michael Oldfield will come into the centres to replace Nick Cotric after the star Raider was hit with a three-game suspension for a dangerous throw over the weekend.

Cotric became the first casualty of the NRL's crackdown on illegal play when he was sent off - the first player to be given his marching orders all season.

Raiders chief executive Don Furner says it is absolutely vital the send-off isn't a knee-jerk reaction, calling on the NRL to be consistent with its rulings.

Sezer admits there is no black and white way to rule on cases of foul play but the decision to come down harder will go a long way towards protecting halves from late hits.

"It's funny you say that, because on the weekend I kicked the ball downfield and I think [Tyson] Frizell put a couple of fingers on me and I got a penalty. I'm all for it if it's going to go our way," Sezer said with tongue in cheek.

"It's hard because rugby league is not a black and white sport, anyone who watches as a spectator will know that.

"A bit of common sense has to come into it, and judge everything on its merit."

Oldfield is the only change in Canberra's 17 to face the Tigers on the club's old boys day, with scores of Raiders legends set to gather to celebrate the 30^th anniversary of their maiden premiership.

Today's crop sit in third heading into the final eight rounds, but the finals are the last thing on Canberra fullback Charnze Nicoll-Klokstad's mind.

"It's just [a matter of] worrying about what we can control, it's just one game at a time for us," Nicoll-Klokstad said.

"It's a big game for us this weekend, not only the two points but it's our old boys day as well."

NRL

Round 18

Saturday: Canberra Raiders v Wests Tigers at Canberra Stadium, 5.30pm.

Raiders squad: 1. Charnze Nicoll-Klokstad, 2. Bailey Simonsson, 3. Jarrod Croker (C), 4. Michael Oldfield, 5. Jordan Rapana, 6. Jack Wighton, 7. Aidan Sezer, 8. Josh Papalii, 9. Josh Hodgson (C), 10. Dunamis Lui, 11. John Bateman, 12. Elliott Whitehead, 13. Joe Tapine. Interchange: 14. Siliva Havili, 15. Corey Horsburgh, 16. Sia Soliola, 17. Emre Guler, 18. Sam Williams, 19. Royce Hunt, 20. Jack Murchie, 21. JJ Collins.