Chesterfield are set for a £4m investment after it was approved at an Extraordinary General Meeting.
It will be the biggest single cash injection ever made in the club and go towards funding the new £13m stadium at Whittington Moor.
The new investor will not be named officially until next month but is believed to be former Sheffield Wednesday chairman Dave Allen.
The club's shareholders approved the investment at the EGM on Monday.
The Spireites took ownership of 10 acres of land for their new stadium on the old Sheffield Road in February.
Meanwhile, chairman Barry Hubbard has told BBC Radio Sheffield that manager Lee Richardson's future does not depend on achieving promotion to League One.
Richardson's contract is up in the summer but Hubbard said nothing will be decided until the end of the season.
"It's really important that we concentrate on the football this season and let's talk about the future when the season ends."
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