Barcelona needed ... the ball around elegantly and PSG had no attacking outlet, with Cavani miles from goal whenever he got the ball on the counter. But the PSG game plan was working.

Barcelona play the most important game of their season so far tonight ... and the heated atmosphere awaiting PSG. You can read their full discussion at the link below, and we'll also bring ...

And a key year in which everything intensified was 2017. Follow the link below to dive into the rivalry. GO FURTHER Messi and Neymar help explain it, but Barcelona and PSG tensions go deeper still ...

highlights and laughs you need to follow the Beautiful Game in every corner of the globe, every Monday-Friday all year long. PSG will face off against Barcelona in the second leg of the Champions ...

That infamous game ... what happened back in 2017 before we trace this rivalry back to the very beginning of PSG's era of Qatari ownership. Back in 2016-17, PSG and Barcelona were drawn together ...

Ex-Barcelona winger Ousmane ... winger Lamine Yamal. But the game turned on its head before the half hour when Barca centre-back Araujo gave the ball away, PSG capitalised and the Uruguay ...

Back in March 2017 they had won the first game 4-0 ... According to PSG there was also a fourth crucial factor – the referee. No one could sleep on the flight back to Barcelona from Paris.