And a statement from Grandtop - which already holds a 29.9 per cent stake - on Friday morning revealed Yeung's offer has support from shareholders owning 79.91 per cent of the company.
The statement said: "The Grandtop Board is pleased to announce an all cash offer to be made by Grandtop to acquire the entire issued and to be issued share capital of Birmingham City, other than those shares already owned by Grandtop.
"The offer will be made on the basis of 100 pence for each Birmingham City Share to which the offer relates.
"The offer values the entire issued share capital of Birmingham City at approximately £81.51 million."
The statement added: "At the date of this Announcement, Grandtop owns and has received irrevocable undertakings from certain Birmingham City Shareholders (all of which are existing Birmingham City Board members (or their associated entities)) to accept or procure the acceptance of the offer in respect of a total of 65,133,001 Birmingham City Shares, representing, in aggregate, approximately 79.91 per cent of the existing issued share capital of Birmingham City."
Yeung had looked set to bid for the club two years ago but an offer failed to materialise, prompting the current owners to challenge him to prove he had the financial muscle to make a firm approach.
Majority shareholders David Sullivan and David and Ralph Gold have always maintained they would not sell the club unless they were confident it was going into safe hands.