The ECB is expected to keep its main interest rate at a record low when it meets today. But what's left in its armoury?

To stimulate growth the ECB has already cut its benchmark interest rate to a record low.

So when Mario Draghi says he’s ready to help – what can he do?

Three options: cut the refinancing rate further, cut the banking deposit rate or there's the option of a funding for lending scheme similar to the UK.

And that’s what makes this week’s meeting all the more unpredictable.