Danyl stormed out of X Factor rehearsals on Wednesday after a furious outburst during a coaching session with singing expert Yvie Burnett. (Story from Telegraph.co.uk)

The school teacher decided he hated his song, Praying for Time by George Michael, and does not want to peform it on Saturday night's show.

Now Danyl, from Kent, is threatening to leave the show altogether unless Cowell agrees to change the song.

An insider told The Mirror: "He literally burst out the door and ran off down Battersea High Street."

"A few production staff chased after him to try to calm him down and make him come back but he was having none of it."

"They even sent a car to follow him and try to make him see sense and return but he refused.
He seems very angry and upset and is demanding a different song. It’ll be interesting to see if Simon backs down or makes him stick with it."

Danyl Johnson, 27, has struggled to win over X Factor fans because he comes across as smug and arrogant. Show insiders have also grown increasingly exasperated by his petulant behaviour.

One said: "He’s not doing himself any favours with stunts like this which just make him look like a spoilt brat. Even if the song choice is wrong there’s no need to storm out, he should talk about it first."

After disappearing for nearly five hours Danyl was thought to be at the Sony BMG offices in London, where Cowell works, for crisis talks.

It is thought Cowell may agree to change the song but Danyl will have to make a grovelling apology to the production crew he has upset with his rants.

A show source said: "Simon will never tolerate rudeness."

Exciting stuff in the X Factor world! How will it affect Danyl's performance on Saturday? Let us know by adding your comments below.