Bruce believes his position at St Andrews is under threat

Bruce has been in charge of Birmingham for six years and still has 20 months remaining on his current deal.

But his future has been placed in doubt after Yeung decided not to rubber stamp the manager's new contract which had been agreed with the current board.

Bruce said: "We'll see what develops but enough has been said publicly."

Bruce's current deal, which was agreed in May, cannot be taken forward under Stock Exchange takeover rules.

Those rules stipulate no new major contracts can be signed when buy-out negotiations are ongoing, unless the paperwork is sanctioned by the club's shareholders.

The �50m buy-out by Yeung has been ongoing for three months and Bruce has called for the situation to be cleared up quickly or risk the club being plunged into further uncertainty.

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Blues chairman David Gold and his fellow directors - brother Ralph Gold, David Sullivan, Karren Brady and Roger Bannister - all sold some of their shares to Yeung over the summer.

The billionaire is now Blues' largest single shareholder, owning 29.9% of the company, while the Gold brothers hold 23.22% - having sold 14.81% to Yeung.

Bruce took over as Birmingham boss in December 2001 and guided Blues back into the Premier League last season.