The period during which investors can express an interest in acquiring a 33 percent stake in Greek state gambling monopoly OPAP expires on Wednesday afternoon.
It is thought that at least three investors will submit final bids after eight suitors initially expressed interest.
The government is looking to raise more than 650 million euros from the sale as part of its plan to raise 11 billion euros from privatizations by 2016.
It is the first major sell-off undertaken by the coalition since it was formed after the June elections last year.
Two of the eight initial suitors for the 33 percent stake wrote last month to OPAP and the Greek privatisation agency HRADF complaining the process is not being run in a transparent and objective way.