[HIGHLIGHTS] Low blows in the transfer window, stormy relations... but why do PSG and Barcelona hate each other so much?

PSG and Barcelona have maintained a sporting, economic and political rivalry for more than ten years. The two clubs will meet in the Champions League quarter-final first leg this Wednesday (9 p.m.) The match at the Parc des Princes will mark the new episode of a rivalry which is expressed on at least three grounds.

Click here to read more about the PSG-Barcelona rivalry. Click here for the Barcelona-PSG Champions League first leg first leg match first leg.