PSG are widely expected to ease into the quarter-finals after a clinical 5-2 thrashing of the Blues in Paris last week.
Chelsea suffered a late collapse in the first leg, conceding three goals in the final 20 minutes to leave themselves with a monumental task in London.
Despite the significant advantage, reigning Ballon d'Or winner Ousmane Dembele, is adamant that the French giants will stay on the front foot rather than dropping deep to defend.
Dembele backs PSG to finish job against Chelsea
“As I said after the first leg, our mentality is to win. We cannot just remain defensive. We need to win,” the France star told reporters on Monday.
“We need to remain extremely focused. Chelsea is a high-quality team, they’ve won many matches in Europe.
"Our mentality will not change – we came here to win.”
Dembele believes PSG have learned from the scare they received in last season’s quarter-finals against Aston Villa.
After building a dominant 5-1 aggregate lead at Villa Park, PSG allowed Unai Emery’s side to claw back three goals, forcing the Parisians to survive a frantic, nerve-wracking finish.
“We may suffer a little bit,” Dembele admitted. “It’s like last season, we won the Champions League but we also had difficult moments.
"We need to remain focused. We’re three goals ahead but our mentality has not changed. We’re not going to be a defensive team and wait. We’re going to play our game.”