JOSE Mourinho believes Chelsea must learn how to unpick opponents who throw 10 men behind the ball or miss out on the Premier League title again.
The Chelsea manager admits his Stamford Bridge side fell short in last term's Premier League title race due to a lack of final-third quality.
Mourinho believes new recruits Cesc Fabregas and Diego Costa will help solve that problem, with Chelsea opening their league campaign at Burnley tonight.
The Portuguese boss admitted Chelsea have worked extensively in pre-season on unpicking opponents who set out solely to nullify his side's threats.
"We need more quality in our football," said Mourinho. "When you have matches with space and time it's much easier to play football.
"When you don't have space and time because a lot of football is based around tactics and systems: in a very simple way, everything depends on space and time.
"And when you don't have space and time to play, you need more quality.
"We are working exactly in that direction.
"We need more quality in our game, and we are working on that.
"We have worked on exactly that in training, expecting a team to be defensive and try to close every road to goal."
Meanwhile, Mourinho has admitted he was "blind" to spurn the chance to sign a teenage Costa for Chelsea eight years ago.
The Blues boss revealed he ran the rule over the 18-year-old Costa when he emerged at Portuguese club Braga in 2006, during his first managerial stint in west London.
Mourinho hailed his £32million summer signing from Atletico as the "humble" striker from "behind the sunset" who can become this term's outstanding Premier League star.
The Stamford Bridge chief remains adamant missing out on the Premier League title would not represent automatic failure this season.
"To be fair when he was in Portugal I had a look at him, so everybody was blind, including myself," said Mourinho, of the Brazil-born Spain forward.
"He can be (the star of the Premier League), yes I know. He's still the guy that comes from a very small village behind the sunset.
"He's still that guy, the way he behaves, the way he acts, the way he interacts, he's still that naive, pure, simple, humble guy."