PSG chief Leonardo admits they face a battle to overcome Champions League quarterfinal opponents Barcelona.

Barca are again favourites for the European crown after the manner of their victory over AC Milan.

"It would have been tough to get a worse draw. I'm not just talking about their last performance against Milan but also what they've achieved in recent years," he told reporters.

"It won't be easy, but these two matches should bring us a lot of joy."