Draghi told the World Economic Forum in Davos that the cleanup being undertaken by the ECB as it takes over banking supervision in Europe would enabling sound banks to finance themselves more cheaply and lend to the real economy.

"Shedding light on banks' balance sheets should help them raise capital in the markets. And of course banks that should go, should go," he said.

(Writing by Paul Taylor; Editing by Paul Carrel and Sonya Hepinstall)