McCluskey 'did not come under pressure' over Labour prospectspublished at 08:34 British Summer Time 19 May 2017
Today Programme
BBC Radio 4
Mr McDonnell denies Len McCluskey has come under pressure to change his mind about Labour's prospects at the general election, but had simply woken up in a more optimistic mood.
Mr McCluskey, general secretary of Labour's biggest financial backer, Unite, had said he believed a Labour win would be "extraordinary" and suggested winning just 200 seats would be a "successful" result.
He later distanced himself from the comments, saying he was now "full of optimism" about a Labour win.
Shadow Chancellor Mr McDonnell tells the BBC: "I think we are going to win and we are going to win it on the basis of the positive hope we are giving people,"