Paolo Vanoli and Davide Mazzotta have joined the team of Chelsea manager Antonio Conte.
Vanoli has joined as first team assistant and Mazzotta will also work as an assistant with particular responsibility for player analysis.
The announcement comes hours after the Italian signed a new deal with the club.
Reports this summer have claimed that Conte was ready to leave the club.
But he ended speculation by signing an improved two-year deal with the Premier League champions.
"I am very happy to have signed a new contract," the 47-year-old said.
"We worked extremely hard in our first year to achieve something amazing, which I am very proud of.
"Now we must work even harder to stay at the top."
