Steve Bruce says he will quit as boss of Birmingham if the club's biggest shareholder Carson Yeung interferes in team selection at St Andrews.
Bruce has been manager of Birmingham since December 2001
Yeung, who bought a 29.9% share in the Blues in July, had a reputation for meddling in first-team affairs at his previous club, Hong Kong Rangers.
Asked if he would tolerate any interference, Bruce told BBC Five Live: "You know the answer to that question.
"If someone tries to pick your team for you then I don't think that is for me."
Yeung paid £15m for his stake in Blues and has an agreement with co-owners David and Ralph Gold and David Sullivan to buy a controlling shareholding in the club.
If you are going to employ somebody you have to back them 100% to manage the way they think is fit
But the Hong Kong tycoon is yet to meet Bruce, who says he is unsure when the takeover will be completed.
"He has bought a percentage of the club and by all accounts he will be ready to take over by the new year," explained Bruce.
"But you would have to ask him about that because I am a little bit left in the dark."
Yeung has already revealed that he hopes to draft in some Chinese players at Birmingham once he is in full control.
Until that happens, Bruce says he is just keen to get on with his job.
"I keep reading about these things and at the moment it is all hypothetical," added Bruce.
"If he does take over I will have conversations with him about how he wants the club to be run.
"Of course you need conversations like I have had with David Sullivan over the years. We have talked about many a player - that is normal.
"But if you are going to manage, it is a hard enough job anyway and if someone is trying to meddle in it then that is not right.
"If you are going to employ somebody you have to back them 100% to manage the way they think fit."