"The European Commission has said future EU members could face extra controls on movement of workers in a concession to the UK." See the article: Future EU countries could face new migration curbs (euobserver, link)
“The European Commission has said future EU members could face extra controls on movement of workers in a concession to the UK.”
See the article: Future EU countries could face new migration curbs (euobserver, link)
And see: European Commission: Report on Enlargement Strategy and Main Challenges 2014-15 (COM-700-14, pdf)