Just 180 minutes away from a trip to Lisbon, Europe's top four sides will be looking to their stars to help them through to the final. Here is a look at five players who could hold the key to their side's success.
After recent scrutiny regarding whether or not Courtois could play against his parent club in the Champions League semi-final, Chelsea's chief executive has said the Belgian will be able to play against the Blues. While Atletico's director has also confirmed that he can play.
After an impressive win over La Liga title rivals Barcelona, "Los Rojiblancos" reached the semi finals of the Champions League for the first time in 40 years. However all is not rosy as they could potentially lose their star 'keeper in the last 8.