The revered DJ fell out with Simon after appearing on his show The X Factor back in 2009. As contestants John and Edward Grimes, known as Jedward, performed Under Pressure by David Bowie and Queen, Calvin stormed the stage with a pineapple on top of his head to mock the pair's hairstyles.

He ran off the stage before security arrived to escort him off, but his actions are said to have infuriated Simon, who then banned him from appearing on the show in the future.

However, sources told Britain's The Sun newspaper that Simon and Calvin have now put their feud behind them, and the Scotsman is in "advanced talks" to join Nicole Scherzinger for the Judges' Houses round of the British talent show.

"Calvin is rightly regarded as one of the biggest artists in music due to his phenomenal chart success," an insider said. "Simon wants A-listers on board and made a beeline for Calvin, ensuring him there would be no issues after the Jedward row.

"It was a long time ago and both have moved on so much since then."

Following the 2009 incident, Calvin defended his actions by claiming the stunt was an attempt to point out that Jedward were a novelty act competing on what was meant to be a "music show".

In 2014, Calvin admitted he and Simon had a "mutual agreement to stay away from each other", adding: "As far as I’m aware, in fact definitely, I’m not allowed back on that show. Sadly that’s it for me and The X Factor."

As well as his huge musical success, Calvin's former relationship with Shake It Off star Taylor Swift has helped propel him to super stardom. The pair split in June (16), and Taylor is now dating The Night Manager star Tom Hiddleston.