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,

The Blaugrana have been bitten by the silverware bug after Sunday's Copa del Rey triumph, adding to the Supercopa de Espana trophy they collected back in January. European success hinges on two gargantuan clashes with Inter as Hansi Flick's side looks to set up a date in the showpiece fixture with either Arsenal or Paris Saint-Germain.

The last four teams standing return to play in the UEFA Champions League this week for the first leg of the semifinals, when some of Europe's top sides will begin to map out their route to the final on May 31 at Munich's Allianz Arena.