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.

Barcelona and Inter Milan have delivered a thrilling 3-3 draw in the first match of their Champions League semifinal.

As Arsenal prepare to face PSG in their first Champions League semi-final since the 2009 we look at every step of the journey that took them there.Over the last 15 years Arsenal have struggled to get