(Adds details on offer, premium, Aveo share movement, background on offer)
Aug 6 (Reuters) - Australia's Aveo Group said on Tuesday that Brookfield Asset Management Inc had offered A$1.27 billion ($859.4 million) in cash to acquire the retirement-home operator.
The disclosure is the first time Aveo has put a value on the offer since it first revealed it was in talks with the Canadian firm nearly a month ago.
Brookfield's proposal values Aveo at A$2.195 per share, representing a 8.1% premium to the company's last close.
Aveo's acquisition would give Brookfield a sizeable chunk of Australia's aged-care industry, which has seen its valuations slide to attractive levels in the wake of a public inquiry into mistreatment and abuse of residents in aged-care facilities.
The offer price would be reduced by the value of any distributions declared by Aveo after entering into an acquisition agreement, the company said.
Aveo's shares were 3% lower at a more than two-week low, compared to a 2.6% fall in the broader market
Brookfield was not immediately available for a comment. ($1 = 1.4778 Australian dollars) (Reporting by Aditya Soni in Bengaluru; Editing by Stephen Coates)