Tusk's comments weighed into a debate in Britain about whether to hold a second referendum on Brexit, following the June 2016 vote to leave.
Tusk appeared to offer hope to anti-Brexit campaigners, concluding his remarks by referencing the ability for a democracy to change its mind.
His intervention came as a new poll suggests more than half of Britons would back another say on European Union membership if the United Kingdom faced leaving the bloc without a trade deal.
"There would be no sudden changes to the United Kingdom regulatory framework. we would give adequate notice and ensure that companies had sufficient time to implement any changed requirements", it said. "Our hearts are still open to you", he said.
Member states are discussing among themselves a new set of negotiating instructions for Juncker's negotiator Michel Barnier ahead of the expected launch of talks on a post-Brexit transition period during which much of the status quo would be maintained.
In Strasbourg, Mr Turks called for continued unity among the remaining 27 members of the European Union, saying: "The hardest work is still ahead of us and time is limited".
China targets websites mentioning Taiwan as a country
Delta Air Lines was this week reprimanded by the Civil Aviation Administration of China for similar descriptions on its website. Media in China has reported that some travelers have cancelled reservations with Marriott as a response to the errors.
'Otherwise we will not have taken back control in the way demanded by the referendum result'.
Brussels diplomats are agreed that Britain should effectively remain governed by the EU's common fisheries policy (CFP) during the transition, but should not have a role in deciding the size of catches elsewhere in Europe, reports the news site.
Manfred Weber, the German politician and leader of the centre-right bloc in the European parliament, attacked the integrity of Theresa May and her government and its choice of priorities.
Timmermans said elections in the Netherlands and France, where eurosceptic candidates lost out, showed that the fallout from the Brexit vote had in fact discouraged others from following suit. "My message to London", Weber said, "is please stop complaining, please deliver, give us an outlook about what you want to achieve for the future relationships".
On 29 March 2017, the United Kingdom government invoked Article 50 of the Treaty on the European Union.
The Economists for Free Trade group used a classic trade model to predict that GDP will spike by nine per cent, amounting to a one-off gain of £180 billion, if Britain leaves on March 29, 2019, without a deal.