Leeds Rhinos captain Danny McGuire left Headingley with a knee brace on after limping out of last night's defeat to Warrington.
The 33-year-old suffered the injury in the first-half and didn't return to action after trying to run it off.
The extent of the injury remains unclear, but McDermott is hopeful that it isn't too serious.
[caption McGuire injury concerns McDermott
Leeds Rhinos captain Danny McGuire left Headingley with a knee brace on after limping out of last night's defeat to Warrington.
The 33-year-old suffered the injury in the first-half and didn't return to action after trying to run it off.
The extent of the injury remains unclear, but McDermott is hopeful that it isn't too serious.
[caption 
