
Laurent Blanc's side have their hands full going into next week's return leg in England having drawn Wednesday's encounter 2-2 at the Parc des Princes.
"We made too many mistakes and Manchester City punished us. You can't afford to make mistakes like this against a team of this quality," Zlatan Ibrahimovic told PSG TV.
"In the return leg, we have to play simple football and fix what didn't work (Wednesday). I'm confident, because I believe in myself and my team."
Ibrahimovic missed a first-half penalty against City, but the Swede made amends just before the break with his 39th goal of the season and needs just two more to match his haul from the 2013-14 campaign.
Paris were beaten 1-0 on their last trip to Guingamp however and are winless in three visits to the Stade du Roudourou.
Meanwhile in the race for second Lyon can crank up the pressure on faltering Monaco when they visit Montpellier on Friday where a win would send resurgent Lyon level on points.
Lyon have won seven of their last nine games to charge back into contention for France's second automatic Champions League qualifying spot, and they could also welcome back Nabil Fekir for the trip to the Stade de la Mosson.
The France international missed seven months with a serious knee injury but returned to action with Lyon's reserve team last weekend as he bids for a place in Didier Deschamps' squad for Euro 2016. ?AFP