<text>  Chelsea go into their second leg against Paris Saint-Germain with a small advantage due to Branislav Ivanovics crucial away goal in Paris. The Blues will be wary of the threat posed by Zlatan Ibrahimovic, Edinson Cavani and Co as they look to seal a spot in the quarter-finals of the Champions League. Here, Sportsmail lists three reasons why Chelsea should be cheerful and three reasons why they should be fearful going into their match against the Ligue 1 outfit. Three reasons to be cheerful... Chelseas home comforts . At home, Chelsea are unbeaten in the Champions League against French opposition, keeping five clean sheets in six games Won 4, Drawn 2, Lost 0 Ibrahimovic struggles to provide knockout blow . Zlatan Ibrahimovic may strike fear into the hearts of opposition defences, but the PSG strikers record in the knockout rounds of the Champions League is not so terrifying... Group stages: A goal every two games, Knockout stages: A goal every 4.9 games They all count... Half of Chelseas Champions League goals this season have been scored via set-pieces nine. Interestingly, the same proportion of PSGs goals conceded in Ligue 1 have been from dead-ball situations 12 of 24. Paris Saint-Germain striker Zlatan Ibrahimovic has struggled during the Champions League knockout stages . Three reasons to be fearful... Terrific record . Laurent Blancs men are unbeaten since January 10 Played 14, Won 10, Drawn 4, Lost 0, Goal difference 16 Keeping it tight at the back . In the first leg at the Parc des Princes, Chelsea were largely dominated by PSG and restricted to just two shots the second of which was Branislav Ivanovics opener. Chelsea to pay penalty . The Blues will be desperate to get the tie wrapped up in 90 minutes - their win percentage in penalty shoot-outs in Europe is just 25 per cent won 1, lost 3. Chelsea were restricted to just two shots at goal during 1-1 draw with Paris-Saint Germain . 