Another conditions being talked about from the EU:
https://www.ft.com/content/683d5212-...e-7aedca0a081a
A option for the EU to force no deal if a future Tory Leader seeks to gain an advantage by vetoing EU budgets/decision. Essentially it makes the option to terminate the Article 50 extension available to both sides, UK or the EU, rather than just when we decide we want to leave.