Birmingham City chairman David Gold admits Carson Yeung's dithering forced Steve Bruce out of St Andrews.
The Blues terminated all takeover talks with Yeung's company yesterday and Gold said: "Mr Yeung and his people played their part in Steve going and, everything we did, we had to get permission to do it off them. We are not used to doing that.
"With the Chinese people, they hold 15 board meetings."
Sullivan joined Gold in insisting what the club needed now was "peace and consolidation" and reiterated his desire to increase his stake to 29.9% and the pair's joint shareholding to just under 60%.
Sullivan also made clear that Yeung would not be getting a seat on the board despite still owning a stake in the club.
"If he wants to put in a pile of money to promote our brand in the Far East - which was part of the vision he sold us - then maybe," he added.
"Perhaps we could go a deal in that respect. But he would have to show us he has the money to invest, that it wasn't just some business deal - and he hasn't been able to do that, has he?"