A couple of weeks ago, a source revealed that Simon Cowell was very disappointed from Niall Horan after leaving One Direction and not signing with his record company for a solo deal.
‘Simon really thought the 1D boys would show loyalty after he mentored them on the show and made them the huge global success they are. Instead they went behind his back.’ – Another source told The Sun this Sunday.
‘He’s not going to be doing them any favours. He knows artists love performing on the show as there are eight million viewers to promote their songs to.” – The insider added letting fans now that Cowell was not allowing Niall to perform on X Factor.