46-year-old Leboeuf is one of the most celebrated defenders in the history of the game, winning both the World Cup and the European Championship with France across a two-year spell.
He spent five years at Stamford Bridge, making over 200 appearances, becoming part of the Blues most successful side prior to the arrival of Roman Abramovich.
A fan favourite, the tough central defender is a fan of Jose Mourinho, and speaking to talkSPORT he revealed how pleased he was with current performances, praising the Blues defence after a first clean-sheet in six games.
Speaking after the 3-0 victory over Aston Villa, Leboeuf said: They are very compact and work well together. It’s very important to be strong at the back.
“We know that [Jose Mourinho] wants to have a very good defence and build from there to have a team who can score at least a goal [a game] and right now they’re scoring more than that.”
Despite failing to defend in the manner usually associated with both Mourinho and the West London club, a potent strikeforce which has netted 19 goals in six Premier League games sees the Blues leading the table, having yet to lose a game.
With the added bonus of a clean-sheet, Leboeuf feels as if nothing could be going better for his former employers, believing they are in a ‘perfect world’.
“Everything is going perfectly. The defence is good, the midfield are winning balls and the strikers are scoring goals,” he added.
“They live in a perfect world right now.”
The Blues will be looking to continue their great start to the season, when they travel to Lisbon on Tuesday to face Sporting CP in the Champions League. With Mourinho still searching for continental glory with Chelsea, he will be hoping that the perfection Leboeuf can see remains for the duration of the season.