Birmingham co-owner David Sullivan wants the future of the club to be resolved by the end of next month after revealing his concerns about Carson Yeung's proposed takeover 'dragging on'.
Yeung has clinched a 29.9% stake in the club and it was thought the Hong Kong businessman would eventually buy out Sullivan and club chairman David Gold.
But Sullivan believes it could be a long drawn-out affair - if it goes ahead at all - and he wants a decision by the end of September.
Sullivan told the Birmingham Mail: 'I have to admit that I am concerned that this is all dragging on too long. It is not in the best interests of the club.
'Mr Yeung is a very nice man, he is very enthusiastic and he clearly likes his football. He has got some great ideas to expand the club and the brand in China and the Far East.
'But I genuinely don't know whether he is going to see it through. When he was here, it seemed as if some days he definitely would, others you weren't so sure.
'I wouldn't think it is a publicity stunt for him because he has spent £15million already and he is doing an audit at the moment, which he needs to do to justify what he's bought to the Hong Kong stock market.
'Different countries have different rules and he might have a different way of doing things, I don't know enough about the Chinese psychology.
'But, for the sake of the club, it needs to be sorted out one way or the other. By the end of September we really do need to know.'
Blues manager Steve Bruce is hoping for financial backing from Sullivan and the board to add two more players before the transfer window closes.
Sullivan said: 'We know we have to bring in one or two players still and that's what we are trying to do this week.'