Wham! are reportedly reuniting for a "one-off pop extravaganza" to commemorate the 30th anniversary of their debut hit.

George Michael and Andrew Ridgeley announced their decision to split in 1986, but according to British newspaper The Daily Mirror they have decided to reform to mark the special occasion.

The publication says fans should expect a "one-off pop extravaganza" from the musical duo.

"George and Andrew have often said their Club Tropicana days are well behind them. But seeing as their anniversary coincides with George releasing new material, it's one of those now or never' moments," an insider told the newspaper.

"They probably won't do a long tour or release new material like Take That but they do want to commemorate the event with a big gig... and an even bigger party afterwards!

"Things are still in the early stages but everybody is getting really excited about it."

Andrew has chosen to shun the limelight since the disbanding of Wham! while George has enjoyed a solo career.

The singer was hospitalised with pneumonia in Austria last year while performing a series of shows for the first time in three years. He is now back to health and getting his music career back on track with new track White Light.

He is excited for his comeback.

"On June 29 it will be 30 years to the day that Wham Rap, our first single, entered the charts," he previously said. "To celebrate, I'm releasing my new song. I dreamed of a career as a singer/songwriter from an early age but never could I have known I'd still be here 30 years later, with much more music to give."