This could really set the cat among the pigeons. The EU will not offer any special deal for services, the largest part of the UK economy affected by the break with Europe, particularly banking.
Will Brexit now unwind? I think this is the beginning of the end of the May Government.
https://www.theguardian.com/politics/2017/dec/18/uk-cannot-have-a-special-deal-for-the-city-says-eu-brexit-negotiator-barnier