Scans have cleared Newcastle Knights halfback Tyrone Roberts of a serious knee injury and he is expected to play in the preliminary final against the Sydney Roosters.

Roberts hyper-extended his knee in the weekend's win over Melbourne.

Winger James McManus is hopeful of returning from an ankle injury after missing the game against the Storm.

Knights utility Matt Hilder says the team will need to step it up a gear against the Roosters.

"They're a real quality side they've been consistent all year," he said.

"You just have to look at their team on paper and you can just see how good of a side they area.

"Playing in Sydney at their home ground pretty much, so we're going to have to go up a gear I reckon."

Knights prop David Fa'alogo says his team has the forwards to match it with the Roosters.

Coach Wayne Bennett will name his side this afternoon for Saturday's preliminary final with the minor premiers.

The last time the two teams met Sonny Bill Williams put a shoulder charge on Knights forward Willie Mason and Fa'alogo says he is expecting another physical challenge.

"It's a challenge that we love to come up against every week," he said.

"Big forwards, we've got big forwards and we're looking to match them in that area and do well.

"It's a team effort and each player is going out there to do their job.

"We're quietly confident; we have expectation, we go in and put in the hard work and that's what it takes.

"If we come away with the victory then it comes down to backing each other up."