The American centre-half had to be replaced during Saturday`s draw with Preston after injuring his back in a heavy fall and manager Paul Lambert has described him as `touch and go` for the trip to take on Sven-Goran Eriksson`s men.
On-loan Blackpool man Rob Edwards will make his first start for the Canaries if Whitbread is ruled out.
Midfielder Simon Lappin has returned to training after surgery on his appendix but will not return to action for several weeks, while striker Chris Martin remains on the sidelines.
Martin (hamstring) is a fortnight away from a return, so captain Grant Holt will continue on his own up front.
Holt grabbed his 16th of the season against Preston but Aaron Wilbraham has not found the net in 12 appearances for the club and third option Simeon Jackson last scored in October.
Source: PA
Source: PA