14 hours ago Becky Morton Political reporter Getty Images Andy Burnham is no stranger to Labour leadership contests. More than 10 years ago he ran twice, unsuccessfully, for the top job. Now he's backed by many Labour MPs as the party's best chance of recovery, after months of languishing in the polls and a devastating set of election results. The only problem? He's not an MP - a requirement to stand as Labour leader. In January, he was knocked back by Labour's ruling national executive committee (NEC) when he sought to stand in a by-election. But he has now managed to find a Labour MP willing to stand down to give him a chance to get back to Westminster to challenge Sir Keir Starmer. It is not a done deal. Sir Keir has said he will not seek to block Burnham from standing in Josh Simons' Makerfield constituency.…