I suspect Andy Burnham will be the leader before long. He seems the only figure in Labour who id presentable, plausible and who might win back the seats in the North.
GLWT.
That's to say he's merely another media savvy self serving drama queen.
And then there's the practical side: he's not an MP, so he would need to find a seat, get selected as the candidate, wait for an election, win that election and finally get elected as leader of the party. That would suggest he's not going to be the next leader of the Labour Party.
Starmer's problem is that he's a centrist having to deal with the consequences of the stroppy side of the party getting their idea of a leader elected. That has prevented the whole party devising a manifesto to fight the next election, and they need to do that soon. It also led to the initial few months of helping Johnson make an even bigger tit of himself - which is like shooting fish in a barrel for anyone whose mouth is connected to their brain - in parliament be wasted, rather than built upon.