Louis Walsh flies to US 'on £160,000 round trip' to replace sick Simon Cowell on US X Factor
Louis was busy working in Manchester on the UK show when Simon, 52, asked his Irish friend to make the £160,000 round-trip to Kansas City.
'Simon said it was an emergency and Louis was the man for the job,' a source tells The Sun.
'He said he'd sorted out a private jet for him and he was to get on it as soon as he finished up in Manchester.'
But not everyone's happy with Simon's decision.
'Louis Walsh instead of Simon Cowell on US X Factor will suck. @britneyspears ignore whatever he says, he'a irrelevant,' Tweets a viewer.
Music mogul Simon hopes he'll be better for the next round of auditions in San Francisco on 16 June.