If you want negotiation done properly, then you need trade unionists to do it. The Government's claim to want something like CETA, only even more so, will unite the Labour Party like nothing in years. There are people in Labour who want Brexit, and there are people who do not. But none of them wants this.
Meanwhile, the wholesale capitulation of Theresa May and of John Major's erstwhile Europe Minister, David Davis, is being hailed as a triumph by the supposed Brexiteers on the Conservative benches. Those truly of that mind number barely the couple of dozen that opposed Maastricht, several of them are the same individuals, and none of them stands any more chance of becoming Leader than Tony Marlow ever did.