The St Andrews board are keen to retain the services of Black to ensure some continuity as plans for appointing Bruce's replacement remain in the balance while uncertainty over the proposed takeover by Hong Kong businessman Carson Yeung continues.
"Eric Black has to be agreed between Steve and the management," explained Whelan.
"I understand Birmingham want some continuity. He wants to come with Steve because a team always stays together.
"Whether he will come immediately I don't know.
"It is a mess when you are looking for a new manager. Everything is stirred up. It is never a happy time and the sooner it is over and Steve joins us I will be a very happy man."