Chelsea manager Jose Mourinho says Paris Saint-Germain are better than last season after adding David Luiz to their squad in the summer.
The Blues struggled to keep up against the raw pace of Ezequiel Lavezzi and Javier Pastore when the two teams clashed last season and the Portuguese says a "different" Chelsea side is this time ready to take on Laurent Blanc's side.
"I think Paris are a great team, basically the same team as last season with David Luiz," Mourinho said.
"The same team basically, the same coach, the same dynamic, the same profile. They have conditions to be better because they have stability.
"We have changed a bit some players and the identity of our game.
"We have changed the profile. I don't want to say if Chelsea are better or worse than last season but, tomorrow, Parc des Princes will see a different Chelsea to last year."
Asked if striker Diego Costa will be a regular, the Portuguese said: "Yes, I start him.
"But I don't think it's good for a player to be three weeks, or three matches, without starting a game.
"So I don't think he's in the best of his condition. But, at the same time, [Loic] Remy and [Didier] Drogba have played in the last three matches.
"Obviously it is important for them to have minutes and confidence. I know that I have them both ready for the game, too."
