Despite them currently sitting top of the league, the Parisians have often struggled to raise their game at home but have impressed in Europe, battling through to the last eight.
However, they have been handed possibly the toughest draw of all against the Spanish giants, but Papin believes they the ability to cause a massive shock.
"Those who think that PSG have no chance are deceiving themselves," the ex-France international was quoted in Le Parisien. "Even if Barcelona have a 70% chance of qualification, with a performance like in the first leg at Valencia, PSG still have a real chance.
"Big players always light up special occasions and Paris Saint-Germain have some great players."