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.”
Motherwell held Ladbrokes Premiership leaders Celtic to a goalless draw despite playing for more than half the match with 10 men at Fir Park.
Michy Batshuayi's cheeky backheel was enough to give Borussia Dortmund a 1-0 win over Hannover 96 at Signal Iduna Park on Sunday, lifting them within a point of second-placed Schalke.
Eintracht Frankfurt boss Niko Kovac felt his side could have scored more goals following their 3-0 defeat of Mainz on Saturday.
West Brom manager Alan Pardew refused to fault his players' efforts after a heartbreaking 2-1 loss to Bournemouth that dashed their already slim survival odds.