Scans have revealed the full extent of the pectoral injury suffered by Panthers prop Tim Grant in the win over Manly Sea Eagles.
Grant suffered a grade two pectoral tear while making a tackle during the second half of Thursday's game at Panthers Stadium.
The 31-year-old will visit a specialist on Monday and will likely require surgery to repair the damage.
Grant will be sidelined indefinitely, with a more specific timeline to be established in consultation with the specialist next week.
Match Highlights: Panthers v Sea Eagles