Takeover target Calan Healthcare has appointed independent valuer Ferrier Hodgson to advise on the deal.
ING Property Trust announced last month it would launch a $1.25 per share cash and scrip offer on February 22. The bid valued Calan at just over $172 million.
Market commentators said ING would struggleto gain traction with the offer, following lacklustre response to an on-market stand at the same price, which closed last week.
With the recent flurry of consolidation in the listed property sector, local brokers put a value range of $1.30 to $1.35 on the Calan units.
ING holds just over 14 per cent of Calan, including the 10.3 per cent already owned by its managed funds arm, ING (NZ) Ltd.