"We knew they have top players and we cannot give them one metre because they can create and score".
But Barcelona have not beaten Chelsea at the Nou Camp in their last four meetings, with the run stretching back to 2005.
Tactics: Chelsea used Eden Hazard as a false 9 in the first leg tie and through such gambit, Antonio Conte managed to get an extra man in the midfield to achieve a compact team that could defend in tight spaces. "We did this, but we made a mistake and paid heavily for it".
"We must have the game to play with concentration, stay with our head in every moment", Conte said. Our guide reveals all you need to know to watch Barcelona vs Chelsea online, including full live stream details and the kick-off time. Conceding a goal at home in their 1-1 draw at Stamford Bridge might come back to hunt them.
Barcelona goalkeeper Marc-Andre ter Stegen repelled Marcos Alonso's strike from Willian's cutback in the 37th minute and, after N'Golo Kante bustled into the box with the second ball, Fabregas got in the way and his team-mate slashed wide. He has also scored eight goals in eight Champions League games against AC Milan, while seven in three appearances against Bayer Leverkusen is highly impressive too.
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Because although his side has only let in two in the Champions League in 2017-18, there will be more tough tests ahead in the latter stages, starting against Chelsea on Tuesday - and a few more goals would not go amiss.
Barca coach Ernesto Valverde added: "It is a very important game".
Conte said his side nearly played the flawless game in the first leg as Barcelona escaped with a 1-1 result and Willian said the same at the pre-match press conference but in this return leg, Conte has warned his forwards that they will have to suffer with the rest of the team against a great team like Barcelona.
123 - Messi has taken 123 appearances in the Champions League to reach three figures in the competition - with 112 of those starts.
The 39-year-old former Spain defender has warned Barcelona to be at their best throughout their game, "After the first leg I think Barcelona are the favorites but you can't be sure".