Sir Keir Starmer says "it's a very early stage" in response to speculation that Greater Manchester Mayor and former Labour MP Andy Burnham could stand in a by-election to become an MP again. Burnham, who has often been labelled a critic of the prime minister, has not ruled out whether he will stand in the by-election to replace Andrew Gwynne as MP for Gorton and Denton. Report by Keechl. Like us on Facebook at http://www.facebook.com/itn and follow us on Twitter at http://twitter.com/itn