According to MNI sources
Should the central bank decide to pursue such an option, it means that they will buy up large amounts of Italian debt, driving down bond yields so that the government will be able to sustain itself. It's an idea floated back in 2012 when Draghi made his famous "will do whatever it takes" comment but hasn't seen the light of day just yet.
Take the news here with a pinch of salt, it's not likely that we'll walk this path but something to consider. Also the fact that there are no official sources cited on the matter.