The ECB is moving towards the end of its quantitative easing. What follows?

The European Central Bank is slowly moving towards completing its four-year program of quantitative easing. And that may be the easier side compared to what is ahead, according to market observers.
And while the members of the ECB feel comfortable about the end of the bond repurchase at the end of the year, it could be much more complicated in 2019.
It is then expected that the ECB would pull out of the bond markets for the first time as a source of liquidity. In addition, we may witness one or two interest rises, in an environment where Mario Draghi paves the way for his successor.