** Shares of Mayfield Childcare MFD.AX drop as much as
24.5% to A$1.05, their worst session on record
** Stock hits lowest level since Dec. 1, 2022
** Says Genius Education withdrew its buyout proposal after
MFD failed to grant additional exclusivity arrangements after
Genius Education matched a rival bidder's A$1.35 per share offer
** Genius Education, which holds about a third of the shares
of MFD, will also use its shareholding to block rival bidder
Busy Bees Early Learning Australia from acquiring MFD, co adds
** MFD is flat YTD, as of last close
(Reporting by Harshita Swaminathan)
((Harshita.Swaminathan@thomsonreuters.com))