New powers for national parliaments to block unwanted rules from Brussels are believed to be among proposals to be laid out as part of the UK's renegotiation on its EU membership.

Following his talks with Prime Minister David Cameron, Donald Tusk, the European Council president, is to publish his proposals for a draft settlement between the UK and the EU later today.

Here is what we understand is on the table.

The "red card" system would allow member states to club together to veto new laws from Brussels.

The move is a UK proposal, but is expected to be included in Mr Tusk's draft settlement.

Under the proposal MPs in parliaments across the EU would have 12 weeks after a draft law is proposed to try to block it.

If a majority of members - 55% of national parliaments - agree, they would be able to use the red card to force the European Council to stop the proposed legislation or amend it to address their concerns.

The Brexit campaign has dismissed the red card system as a "gimmick" that Brussels would ignore.

Among the EU's proposed measures is an "emergency brake" on welfare payments to EU workers.

It is being put forward as an alternative to Mr Cameron's plan to impose a unilateral four-year curb on welfare payments to immigrants, which other member states had ruled out as discriminatory and in breach of the EU's principle of freedom of movement.

The emergency brake would allow member states to halt benefit payments where they can prove the level of immigration is putting a strain on public services, such as hospitals.

A stumbling block, however, is the UK's demand for it to be allowed to remain in place "long enough to resolve the underlying problem" - perhaps as long as seven years.

The EU proposal envisages only four years.

The move has found some favour with the prime minister as a "stop gap" since Mr Tusk indicated the UK's current immigration levels would mean the brake could be triggered immediately after a vote to remain in the EU.