From the 'NRL Casualty Ward - All the Latest Injury News, Updates & Returns Details' web page, Here is the Latest NRL Injured or Unavailable Update:
* * * (Updated: Wednesday, 22 Feb 2023) * * *
www.nrl.com
Sea Eagles five-eighth Josh Schuster has been ruled out of Round 1 due to a calf injury.
The club confirmed on Tuesday night that Schuster won't be available for the season opener against Canterbury but should be available after the side's bye in Round 3.
Sea Eagles pair Morgan Harper (knee) Brad Parker (broken nose) picked up injuries in the Pre-season Challenge but have been cleared of serious damage while coach Anthony Seibold has declared superstar fullback Tom Trbojevic a certain starter for Round 1.
Manly Sea Eagles
Also, from the NRL Casualty Ward, Manly hub page, there are slight variations to the information regarding the unavailable or injured players and their return periods:
www.nrl.com
* * * (Updated: Wednesday, 22 Feb 2023) * * *

NRL Casualty Ward: Surgery for Knights recruit; Paps returning to USA
All the latest injury news for the 2023 NRL Telstra Premiership.

Sea Eagles five-eighth Josh Schuster has been ruled out of Round 1 due to a calf injury.
The club confirmed on Tuesday night that Schuster won't be available for the season opener against Canterbury but should be available after the side's bye in Round 3.
Sea Eagles pair Morgan Harper (knee) Brad Parker (broken nose) picked up injuries in the Pre-season Challenge but have been cleared of serious damage while coach Anthony Seibold has declared superstar fullback Tom Trbojevic a certain starter for Round 1.
Manly Sea Eagles
- Morgan Harper (Knee, Round 1)
- Brad Parker (Broken Nose, Round 1)
- Tom Trbojevic (Hamstring, Round 1)
- Josh Schuster (Calf, Round 3)
- Karl Lawton (Knee, Round 4-5)
- Morgan Boyle (Foot, Mid-Season)
- Jason Saab (Knee, Mid-Season)
- Alec Tuitavake (Knee, Mid-Season)
Also, from the NRL Casualty Ward, Manly hub page, there are slight variations to the information regarding the unavailable or injured players and their return periods:

Casualty Ward
Check the Official NRL Casualty Ward, which players are injured, and who is expected to make their way back onto the field and in the game.

- Morgan Harper (Knee, Round 1)
- Brad Parker (Facial Injury, Round 1)
- Tom Trbojevic (Hamstring, Round 1)
- Josh Schuster (Calf, Round 3)
- Karl Lawton (Knee, Round 4)
- Morgan Boyle (Foot, Indefinite)
- Jason Saab (Knee, Indefinite)
- Alec Tuitavake (Knee, Indefinite)