Goalkeeper John Ruddy (groin), Martin Olsson (hamstring), Graham Dorrans (groin), Alex Pritchard (side strain) and Matt Jarvis (knee) are all missing for the Canaries, who rested Michael McGovern, Timm Klose, Robbie Brady and Alex Tettey in midweek.
BBC Radio Norfolk’s Chris Goreham:
“It feels like a pivotal week in Norwich City’s season. A win at Birmingham would give them 11 points from five games and mark a very strong start to life back in the Championship.
“Anything less would still leave big question marks for the fans about their ability to make a swift Premier League return.
“With the transfer window closing in less than a week, Alex Neil is also running out of time to land the striker that he has had earmarked as a priority all summer long.”
Birmingham City, who have picked up five points from their first four matches, have dropped the most points (5) from leading positions in the Championship this season.
Norwich, fourth in the table after an unbeaten start, have not lost in their last 14 away league games in the second tier (including play-off games).
Blues, who have not won in their last eight home league games, have drawn three of their last four league meetings with Norwich at St Andrew’s.
The Canaries have not lost in their last eight league games meetings with Birmingham, having won three and drawn five.
Blues midfielder David Davis is the only player in the division to have been booked in all four games this season – just one away from a ban.