George Michael is reportedly planning a series of special guests at his final two concerts next month.
The singer wraps up his world tour - rumoured to be his last ever - at London's Earls Court Arena and insiders claim he is going to treat fans to several surprise duets, including the possibility of a reunion with former Wham! bandmate Andrew Ridgeley.
A source revealed to Britain's The Sun newspaper: "George is planning a series of surprises for his final shows.
"He's keeping his cards close to his chest but many are predicting that he'll reunite with Andrew to sing a track or two."
Meanwhile, George, 45, has spoken out about his battle with depression and fears he is "cursed".
Speaking about the death of his lover, Anselmo Feleppa, the 'Fast Love' star told US TV show 'Good Morning America': "It was a terribly depressing time. I had my very first relationship at 27 because I really had not actually come to terms with my sexuality until I was 24.
"I lost my partner to HIV, then it took about three years to grieve, then after that I lost my mother. I felt almost like I was cursed.
"The only thing that got me through it was my music. It survived. I wrote very, very little, but the little I wrote did well and kept my head above water. "It was depression and shock which just went on for years."