The Luther star is determined to turn his dad’s native Sierra Leone into Africa’s answer to Dubai.
Friends of the actor say he wants to create a luxury eco-resort of restaurants, bars and hotels and is sounding out possible investors.
Idris, 49, was diagnosed with the virus this week after meeting in London with Sophie Trudeau, wife of Canadian premier Justin.
Sophie, 44, has also tested positive for Covid-19.
The Wire actor is in quarantine at home with his model wife Sabrina, 30, but says he’s “doing OK” and has had no fever.
He fell in love with Sierra Leone when he visited its capital Freetown last year.
His dad, Winston, was born in the West African country, which was torn apart by a brutal civil war from 1991-2002. Winston moved to London, raising Idris in Hackney.
The star was awarded citizenship when he visited Sierra Leone. He called it “the biggest honour I could get from my country”.
A source says of his plans: “Idris saw real potential when he visited Sierra Leone. It made an impact on him and he wants to create something positive for the country and give back.
“Tourism is developing out there and he wants to help it to grow and thrive and look forward.
“He’s looking at the development of a luxury eco-resort with hotels, restaurants, nightlife, private beaches.
“He thinks it could be the next Dubai and wants to turn it into a real holiday hotspot and put the country on the map as a must-see destination.”
And while Idris, tipped to be the next James Bond, is stuck indoors, he has time to mull over his plans.
He is also a DJ and has played top clubs in Ibiza, so will hope to make Sierra Leone’s nightlife buzz.
The source added: “He met the country’s president Julius Maada Bio, who made him a brand ambassador and he has promised to shine a light on the nation.
“As soon as it is safe to do so, Idris will be working on this project, speaking to developers and investors about coming on board.”