The Liverpool Echo has the story – see link above.
Who on Merseyside thinks that Tony Blair has any credibility these days? Why would folks take on board his views about anything following the Iraq War? Is Joe in effect writing his resignation letter as Mayor of Liverpool by backing Blair? Surely Labour members will not keep Joe on after he agrees with Blair? What does Burnham think needs to be said today to get Labour members to vote for him?
Blair, Burnham and Anderson sounds more like a firm of undertakers to me out for a trip in boat holed below the waterline.