Birmingham reserves boss Bertschin also wants Wigan move Birmingham City risk losing reserve-team boss Keith Bertschin to Wigan Athletic, along with manager Steve Bruce and No2 Eric Black.
The Mail on Sunday says Birmingham want Black to move into a caretaker role but he is keen on moving to JJB Stadium along with Bertschin.
Negotiations are continuing between the two clubs and, if a satisfactory agreement is reached, academy director Terry Westley could be in charge for next Saturday's home Barclays Premier League clash with Portsmouth.