Michel Sapin spoke after a meeting of finance ministers in Brussels | Guillaume Souvant/AFP/Getty France’s Sapin: UK won’t get any veto over euro

French Finance Minister Michel Sapin told Britain on Friday it should not expect a renegotiation of its membership of the EU to include any powers of veto over closer integration of the euro.

"Nothing should stand in the way of a further integration of monetary union," he told reporters at a meeting of EU finance ministers in Brussels, adding that the rest of the 19-nation currency union supported Paris on this point.

Another concern expressed by France and other eurozone countries is that if Britain votes to stay in the EU in a referendum likely to be held mid-year, it could benefit from looser financial regulations as a result of the negotiations, which will be the main subject of next week's EU summit.

One EU diplomat said the Single Rulebook, which aims to harmonize EU financial regulation, should apply to countries inside and outside of the eurozone, to avoid distorting competition between their financial institutions.