The Roosters were home at Allianz Stadium in Round 18 for a physical clash with the Rabbitohs which saw plenty of bruised bodies after 80 minutes of football.
In the final ten minutes of play, Michael Gordon was forced from the field after sustaining a pectoral muscle injury.
Gordon received scans over the weekend to determine the severity of the injury, and the Club has elected to undergo an extensive rehabilitational program to ensure a full recovery.
It is expected that he will miss up to eight weeks of NRL action.
The rest of the squad escaped without any injury concerns and will be available for selection for the Roosters Round 20 clash against the Newcastle Knights.