What was thought to be a 24 hour bug appears to have turned into a viral infection and Kav is now a doubt for Friday night.
Lennie also has concerns over Rhys Weston (hamstring) and Scott Young (shin) but both are expected to be OK.
Layton Maxwell has a suspected hernia and Leo FW will be out for possibly three weeks with ankle damage.
Daniel Gabbidon, chosen by wales for the forthcoming international, will be allowed to join the Wales party but only if given permission by Cardiff City who have been without the defender since early November. Gabbidon is in full training but not quite ready to play yet.
David Hughes misses tonights FAW Cup game and missd last weeks reserve game after a flare up of a kne injury. He's had three operations on the knee and is hopeful of fully resuming his career.
Des Hamilton is fully fit now and will play against TNS tonight as does Gavin Gordon. Gordon it was feared would miss the game after an achillies problem but he's fit to play. Andrew Jordan also plays as he plays his third game in as many weeks.