Marco Stiepermann has been ruled out of Norwich's Sky Bet Championship clash against Preston.
The midfielder is battling a back injury and will not be available for the Canaries.
Sam Byram will not be available again until the New Year. The full-back has been sidelined since February after undergoing surgery following a hamstring injury.
Daniel Johnson could make his first league start of the season when Preston travel to Carrow Road.
Johnson was a conspicuous absentee from Preston's matchday squad last weekend as the Lilywhites started their Championship campaign with a 1-0 defeat against Swansea. But the midfielder came off the bench to score the winner in his side's Carabao Cup win at Derby on Tuesday.
Tom Barkhuizen is pushing for a start after he also scored following his introduction as a second-half substitute in the midweek cup victory.
Striker Louis Moult remains unavailable as he continues to work his way back from a knee injury which has kept him out for a year.