May 28 (Reuters) - Australia's Investa Office Fund (IOF) (IOF) said on Monday it has received a A$3.08 billion ($2.33 billion) unsolicited non-binding buyout proposal from the Blackstone group BX.N .
The directors of IOF manager Investa Listed Funds Management said they plan to unanimously recommend the offer, which equates to a distribution adjusted price of A$5.15 per unit.
($1 = 1.3235 Australian dollars)
