The southern club in Italy posted a tweet welcoming the new coach, Gattuso, saying, "Welcome, Gattuso."
#WelcomeGattuso 💙 #ForzaNapoliSempre pic.twitter.com/dzmNApimTX
— Official SSC Napoli (@sscnapoli) December 11, 2019
Gattuso joined his former coach, Ancelotti, after he trained under his supervision in the 2003 and 2007 Champions League title and became close friends.
Gattuso said in statements highlighted by the club's official account: "Ancelotti is like a father to me, he is always close to me and supports me, he won a lot, and I still have a lot to prove."
He added: "The team is aware of the difficult situation and wants to do well. I've been encouraged.
"I fear nothing. I know I'm going to be working with experienced people. I hope to get results."