AKIPRESS.COM - The European Union offered Britain talks this year on a future free trade pact but made clear in negotiating guidelines issued on Friday that London must first agree to EU demands on the terms of Brexit, Reutersreported.

Those include paying tens of billions of euros and giving residence rights to some 3 million EU citizens in Britain, the proposed negotiating objectives distributed by EU summit chair Donald Tusk to Britain's 27 EU partners showed.

The document, seen by Reuters, also sets tough conditions for any transition period, insisting Britain must accept many EU rules after any such partial withdrawal. It also spelled out EU resistance to Britain scrapping swathes of tax, environmental and labor laws if it wants to have an eventual free trade pact.

The guidelines, which may be revised before the EU27 leaders endorse them at a summit on April 29, came two days after Prime Minister Theresa May triggered a two-year countdown to Britain's withdrawal in a letter to Tusk that included a request for a rapid start to negotiations on a post-Brexit free trade deal.

"Once, and only once we have achieved sufficient progress on the withdrawal, can we discuss the framework for our future relationship," Tusk told reporters in Malta -- a compromise between EU hardliners who want no trade talks until the full Brexit deal is agreed and British calls for an immediate start.

"Starting parallel talks on all issues at the same time, as suggested by some in the UK, will not happen," Tusk said, while adding that the EU could assess as early as this autumn that Britain had made "sufficient progress" on the exit terms in order to open the second phase of negotiations, on future trade.

Brussels has estimated that Britain might owe it something of the order of 60 billion euros on departure, although it says the actual number cannot be calculated until it actually leaves.