The $12 billion Sonic Healthcare Limited (ASX:SHL) has been talking about further acquisitions for years, but one of its next big deals could be just around the corner. DataRoom understands Sonic is positioning itself to buy the diagnostic imaging business that Healius Limited (ASX:HLS) has placed on the market and may fetch a price of as much as $800 million. It comes after Sonic has flagged acquisitions are on its agenda, with most of its opportunities abroad, given its dominant position in the Australian pathology market.