EU freedom of movement rules cannot be changed - Juncker
22 October 2014 Last updated at 23:26 BST
Jean-Claude Juncker, the incoming president of the European Commission, has insisted that rules on freedom of movement in Europe cannot be changed.
David Cameron has suggested the right of EU nationals to live and work in other member states could be qualified.
But Mr Juncker told the BBC if "we change rules on freedom of movement today, tomorrow others will try to change freedom of movement of capital".
Gavin Hewitt reports from Strasbourg.