The Blues confirmed Makelele's new role on Friday.
Former Chelsea midfielder Claude Makelele has returned to Stamford Bridge as a "technical mentor" to the club’s younger players.
The 46-year-old became a fan favourite after he left Real Madrid in 2003 for Chelsea where he spent five years, winning five trophies.
Since retiring, the former Les Bleus star has taken various roles at Paris Saint-Germain, Bastia, Swansea City and Eupen.
On Friday, the west London club confirmed Makelele will work closely with the academy and the players who are also on loan, however, the Frenchman expressed his delight to be back at the Stamford Bridge, 11 years after departing.
"I am very happy to come back home," Makelele told the club's official website. "This club gave me a lot and now I want to give back and help the young Chelsea players dreaming of a career in football.
"I want to use all my experience to help them become professionals in every aspect and I am looking forward to getting started."
Makelele will have loads of tasks on his hands including "tracking technical performances" and "providing regular match feedback".