Receivers say five offers have been made for an interest in Birmingham or parent company Birmingham International Holdings Limited.
Burton have completed the loan signing of Denny Johnstone from Birmingham until the end of the season.
Birmingham have signed Diego Fabbrini on loan from Watford for the rest of the season.
Nikita Parris nets as Manchester City beat Sunderland, while Liverpool see off Birmingham in the FA Women's Super League
Birmingham's long-term injury victims Matt Green and Gavin Gunning stepped up their recoveries by featuring for the Under-21s.
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Midfielder Callum Reilly has returned to Birmingham from his loan spell at Burton after suffering a calf injury on his debut.
Eoin Doyle scored his first goal for Cardiff as they secured a 2-0 Championship victory over Birmingham.
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