Europe is set to seek a €50bn (£44bn) divorce bill to break the stalemate as Britain haggles over a deal to leave the European Union, according to senior European diplomats.

This financial settlement is at least twice the amount offered by Theresa May, which is reported to be in the region of £20bn. The UK needed to issue an agreement in-principle in order to start trade talks, EU sources told The Sunday Telegraph.

The Prime Minister’s speech in Florence on Friday stated that Britain “will honour commitments” agreed when it was an EU member.

Ms May did not mention a specific amount that the UK would pay into the EU for the two years after it leaves in March 2019.

EU officials are pushing for more detailed information concerning the rights of EU citizens, as well as the monetary deal.

French president Emmanuel Macron said: “Before we move forward, we wish to clarify the issue of the regulation of European citizens, the financial terms of the exit and the question of Ireland.”

He warned: “If those three points are not clarified, then we cannot move forward on the rest.”

According to EU sources, Ms May’s Florence speech will be discussed during talks scheduled in Brussels on Monday 25 September, which will be attended by 100 UK officials.

The EU remains steadfast in its demands that Britain continues to pay into the European Union budget for a transitional two years – in 2019 and 2020.

Brexit: the deciders Show all 8 1 /8 Brexit: the deciders Brexit: the deciders European Union's chief Brexit negotiator, Michel Barnier Getty Brexit: the deciders French President Emmanuel Macron Getty Brexit: the deciders German Chancellor Angela Merkel Reuters Brexit: the deciders Commission President Jean-Claude Juncker EPA Brexit: the deciders The European Parliament's chief Brexit negotiator Guy Verhofstadt Getty Brexit: the deciders Britain's Prime Minister Theresa May Getty Images Brexit: the deciders Britain's Chancellor of the Exchequer, Philip Hammond PA Brexit: the deciders After the first and second appointed Brexit secretaries resigned (David Davis and Dominic Raab respectively), Stephen Barclay is currently heading up the position PA

“This is just a payment for the remaining financial framework period,” Ales Chmelar, the Czech secretary for European affairs told the BBC.

“This is not a payment for all the legacies that we see, including for example the pensions and the legacies in terms of grants and funds.”

EU Brexit negotiator Michel Barnier said he would look into the “concrete implications” of the UK’s pledge that no member state would have to pay more as a result of Brexit, adding: “We shall assess ... whether this assurance covers all commitments made by the United Kingdom as a member state of the European Union.”

European negotiators are pushing for a much higher figure than offered by Mrs May, believed to be “about €40bn- €50bn”.

Speaking on the BBC Andrew Marr Show, Brexit Secretary David Davis attempted to allay fears over reports that the UK divorce bill could be as much as £40bn.

Mr Davis said that Britain would be paying “roughly” £10bn a year into the EU budget during the two-year transition period.

However, the Brexit secretary would not be drawn on the final amount, saying that would be a matter for negotiation. When questioned about the £40bn settlement suggested by EU officials, Mr Davis said: “They sort of made that up too.