Birmingham City's co-owner David Sullivan has accused Carson Yeung of "damaging" the club with his protracted takeover at St Andrew's.
The Hong Kong-based businessman has been given a Christmas deadline to complete his drawn out takeover.
However, Sullivan is concerned that an effective freeze on new contracts for City staff - including manager Steve Bruce - is having a negative effect on the club's future.
Yeung purchased 29 per cent of the club's shares during the summer but has yet to finalise a full buyout.
"We did not expect an extended takeover period preventing us from offering contracts to staff - particularly Steve Bruce, who deserves a new deal. This is a difficult and unusual position for the board," Sullivan told the Daily Mail.
"Despite Carson's assurances that he would maintain staff, I have to say I've been shocked and disappointed that he will not let the current board finalise a contract with the club's longest-serving and most successful manager.
"It's a credit to Steve and the players that they are giving their all.
"Despite sending repeated emails to his number two, explaining the position and the damage something like this could do to the team, I am still waiting for a reply - some three weeks later.
"I cannot believe that Carson and his group do not realise how damaging their actions are for the club."