Cooper Cronk will not line up for the Roosters in their clash with Manly after suffering a hamstring strain.
It’s understood Cronk experienced hamstring tightness after a training session earlier in the week. He was officially ruled out of the clash on Friday.
The club has been granted an exemption to bring Lachlan Lam into their 21-man squad, having not named an additional playmaker in their team on Tuesday.
Lam, the son of former Roosters and Queensland Origin star Adrian, recently signed an extension at the club.
He is now expected to make his debut at Brookvale Oval on Saturday.