The Sydney Roosters NRL team has undergone evaluations following Round 4 against the Manly Warringah Sea Eagles.
Billy Smith exited the match at halftime and preliminary scans have ruled out a severe knee ligament injury.
Further testing is scheduled for early this week to determine his rehabilitation plan.
Egan Butcher was removed from the match early on due to a head knock injury.
This was classified as Category 1, so he will begin standard concussion recovery protocols.
Spencer Leniu is making good progress in his rehab for a moderate hamstring strain, with a return expected soon.