Simon Cowell's son Eric will "step into [his] shoes big-time" in Sunday (02.12.18) night's 'X Factor' final.

Simon Cowell

Simon Cowell

The 59-year-old judge and show creator is set to involve his four-year-old son Eric in the live final of the ITV singing competition, and although he's keeping details under wraps until the show airs, he's teased that some people think he's "out of his mind" for what he has in store.

Simon said: "Eric is going to more involved than ever, he is about to step into my shoes big time. You'll see what we do. A few people have gone, 'You are actually out of your mind'. Probably - but it's fun. And that's what I like doing."

And although he's known for being Mr. Nasty on the programme, Simon admits his son - whom he has with partner Lauren Silverman - has made him soften up.

He added: "Eric finds me funny and I find him funny. I've laughed more this year than I have done in years. It's chilled me out. We watch movies and then we have these crazy conversations.

"He reminds me of what I used to be like when I was his age."

Simon also teased that the current line-up of judges - including Robbie Williams, his wife Ayda Field, and One Direction star Louis Tomlinson - could be set to continue on to next year's show, as they've all "had a great time" on the panel this year.

Speaking to the Sunday Mirror newspaper, Simon said: "I've spoken to Robbie who with Ayda definitely wants to come back, I hope Louis does too. They have all had a great time.

"I've known Robbie a long time and it's no secret we've been trying to get him to do the show for years. He says it's the best job he has ever had because it is fun."