BBC report
EU Commission leader Jean Claude Juncker was quoted telling the BBC that he's meeting Theresa May this afternoon and that he's been 'Crystal clear there will be no renegotiation' of the Brexit deal.
The real question in the Conservative leadership race should be 'what are you going to do if the EU won't renegotiate?' because that's the most-likely outcome. There might be some wiggle room on the political declaration but it's not going to make a big difference to the deal.
In any case, I'm dreaming here because the Conservative leadership race is going to feature a bunch of unrealistic promises about renegotiating.