Birmingham have approached Hibernian for permission to speak to manager Colin Calderwood with a view to becoming their assistant coach, Press Association Sport understands.
Blues see Calderwood as a candidate to become number two to new boss Chris Hughton.
Current assistant manager Peter Grant is expected to eventually join former City boss Alex McLeish at Aston Villa.
Hughton and Calderwood previously worked together at Newcastle as manager and first team coach respectively.
Before that, Calderwood had been a player and Hughton on the coaching staff at the same time at Tottenham.
Calderwood left St James' Park last October - shortly before Hughton was sacked - to take charge of Hibs, who finished 10th in the Clydesdale Bank Premier League last season.
The former Scottish international previously had managerial experience at Northampton and Nottingham Forest.
Meanwhile, Birmingham remain determined central defender Scott Dann and striker Cameron Jerome will not be allowed to leave on the cheap.
City are already resigned to losing midfielder Craig Gardner in a £5million plus switch to Sunderland.
Stoke are believed to be offering £16million for Dann and Jerome.
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