5 things to look forward to when Chelsea take on Barcelona 

#2 The history between the two sides could make it entertaining

Champions League Semi-Final 2009 was a hugely controversial match

Chelsea and Barcelona fans share quite a bitter relationship with each other. They have gone head-to-head 12 times, with Chelsea winning four compared to Barcelona's three while five games have been drawn.

Who can forget the controversial semi-final match of 2009, when erroneous refereeing shocked the footballing world? The match of 2009 was officiated by referee Tom Henning Ovrebo, who still claims he gets hateful messages from the Chelsea fans.

Barcelona haven’t been able to forget the heartbreak of the semi-final in 2012 when Fernando Torres skipped past Victor Valdes to score the goal, and send the Blue Army into raptures. Only time will tell, how this tie will turn out.