How does it work?Thirty-six sides entered into the new "league phase" and now just four remain with a month-and-a-half to go in the UCL campaign.Barcelona, Paris Saint-Germain, Arsenal, and Inter Milan are through to the semifinals,

Well, we are down to the business end of the Champions League as four European heavyweights prepare for battle in the semifinals.Arsenal, PSG, Inter Milan, and Barcelona remain standing after grueling knockout campaigns.

Arsenal and PSG lock horns in what is tipped to an exhilarating battle for a spot in the final of the UEFA Champions League.