Italian runners-up Napoli introduced Massimiliano Allegri as their new coach on Friday.
Antonio Conte left Napoli, while Allegri was sacked by Milan after the end of last season.
Allegri has signed a three-year contract with the team where Amir Rrahmani plays.
The 58-year-old has a long and successful career in Italian football.
He led Milan to the championship title in 2011. He led Juventus to five titles and five Italian Cups.