Frank Field MP has said that Labour "certainly" need a new leader who is a "likely Prime Minister".
He said that Jeremy Corbyn has been "brilliant" at representing people who have "lost out under globalisation", but that he hasn't connected with most of the electorate.
Mr Field added that he will be going to the meeting on Tuesday which could see Labour MPs taking part in a secret ballot over their leader.
The leader of the UK's biggest trade union has said the country is 'riven' as a result of the EU referendum.
Len McCluskey told ITV News that the trade unions can help broker a peace deal and reunite the party now the "coup has failed".
Labour leader Jeremy Corbyn said he would 'reach out' to MPs that oppose his leadership but said they should 'respect democracy'.