"Scotland's huge contribution to a sterling area's balance of payments is another reason why it will be in the interests of the r UK."
Commenting for Better Together, Labour MP Ian Murray said: "This is another hugely experienced expert who has underlined the currency chaos which has plagued Alex Salmond's campaign.
"When a voice such as Douglas Flint's warns of the risks of money leaving a separate Scotland to somewhere safer, you pay attention.
"With just days to go until up to a million Scots start voting by post, Alex Salmond is running out of time to name Plan B.