British tabloid The Sun reported on Wednesday that McLaren's double world champion of 1998 and 1999 has been talking to BMW Williams about a test.
The Finn left McLaren Mercedes in 2001 to spend more time with his wife and baby son.
But Hugo 'starts school in September,' the newspaper quoted a source 'close' to the driver, 'and Mika Hakkinen is now thinking about how to fill his days.'
A track test might take place in July or August, the publication speculates.
BMW Williams has definitely one, and probably two, seats to fill next season as Juan Pablo Montoya heads off to McLaren and Ralf Schumacher tries a Toyota.
Mika has opened talks with Williams' engine partner BMW, the report claimed.
The Sun also said 35-year-old Mika was 'smoking heavily' after retirement.
But, according to the articleB, he's now 'super fit.'