It's the business end of the Champions League, where heroes are made and Ballon d'Or winners forged. But which players will prove most pivotal to their team's success?
This week, with Paris St-Germain facing Bayern Munich and Atletico Madrid hosting Arsenal in the semi-finals, we're looking at those key cogs among the clubs battling for Europe‘s grandest prize.
This is not a list merely of the biggest stars - although many of them feature - but those players whose presence could be vital to their team reaching the final in Budapest.
You can have your say at the bottom of the page too.