The Daily Telegraph reports that the former newspaper editor, who has been a judge on the ITV1 reality show for four years now, has been offered a deal to anchor the US network's nightly chatshow.
"CNN bosses have been desperately searching for somebody to revamp the show. Larry's ratings are massively down year on year – and Piers is just the chap," a source said. "Piers is utterly thrilled by the prospect of the deal and knows that taking over the Larry King show means that something will have to give.
"America's Got Talent finishes in mid-September, so it seems Larry will be moved to a weekend show then and be ousted from his nightly prime-time slot," the insider added. "Piers has discussed it all with Simon Cowell, who gave him his big break on America's Got Talent and Britain's Got Talent, and has his blessing.
The 45-year-old has already confirmed that he will host an NBC version of Life Stories.