The eurozone’s six triple A rated countries should have greater say in economic affairs within the single currency and act as its inner “core”, Finland’s Europe minister will on Thursday argue, the latest sign that a small subset of countries are attempting to band together to set new rules for the euro.

Alex Stubb said in an interview he did not believe new institutions should be created to give the triple A countries more power. But he said European Union rules that allowed “enhanced co-operation” between member states might be needed so they could co-ordinate economic policies.

“I don’t see some countries dropping out, but I see countries inside losing influence,” Mr Stubb said ahead of an address today.