It comes after data published Tuesday revealed that inflation in the euro zone came in lower than expected in December, adding to concerns that the euro zone could be heading towards a period of deflation.
Consumer prices rose by 0.8 percent year-on-year in December, below the 0.9 percent expected by economists and close to October's 47-month low of 0.7 percent which spurred the European Central Bank (ECB) to cut its main interest rate.
On Thursday, the ECB will announce its latest monetary policy decision – and although the majority of economists are not expecting the central bank to act this month, inflation figures could lead to calls for more stimulus in 2014.
(Read more: ECB unlikely to deploy its artillery, but pressure grows)
There are, however, signs that economic recovery in the euro zone is gathering pace. On Monday, data revealed that services and manufacturing activity in the region expanded in December. The Markit composite purchasing managers' index (PMI) data showed that activity in the sectors rose to 52.1 in December, up from 51.7 in the previous month.
But economists were quick to point out that although the region as a whole appeared to be doing well, growth in the sectors was again uneven on a regional level.
Germany, Ireland and Spain's PMIs, for example, all came in well above the 50-point mark indicates expansion. But France's negative trend accelerated in December, with services and manufacturing activity hitting a seven-month low.
Follow us on Twitter: @CNBCWorld