European Central Bank Executive Board member Jose Manuel Gonzalez-Paramo said policymakers have a ?strong preference? for Greece to stay in the euro area.
?It is a constitutional matter,? Gonzalez-Paramo told reporters in London on Friday.
?There is no exit foreseen in the treaty.?
He declined to comment on remarks made by European Union Trade Commissioner Karel De Gucht that officials from the ECB and the European Commission are working on contingency plans to deal with a possible Greek exit from the euro.