Greece is planning to lease a stretch of a key motorway connecting Athens and the port city of Eleusis to conglomerate Gek Terna in what would be the most lucrative such move for the state yet. Known as Attiki Odos, the 70-kilometre motorway connects Athens airport in eastern Greece with Eleusis in the west. For the next 25 years, GEK Terna will lease the stretch for €3.3 billion ($3.7 billion), the highest leasing price ever achieved by the state, Prime Minister Kyriakos Mitsotakis said on Monday. When Greece was grappling with a financial crisis between 2010 and 2018, Athens was pressured by…