The 58-year-old has been out of a job since departing Bayern Munich in September last year but will now return to the dugout in the 2018/19 campaign with the Serie A giants.
Napoli finished four points behind Juventus in the Serie A title race after faltering late on to hand the Bianconeri their seventh successive league success.
Maurizio Sarri with his fluid attacking style has impressed one and all, especially Manchester City manager Pep Guardiola who hailed his Napoli side as one of the best teams which he has ever faced.
"He created a model of play admired everywhere and by anyone".
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German Finance Minister Olaf Scholz said the European Union should be united in its response to the threat of USA tariffs. The U.S.is also one of the biggest markets for Toyota and Hyundai, though both have American factories.
The changing of the guard in the south of Italy means that Sarri's suitors Chelsea no longer have to pay the £7m contract release fee that kept him tied down in Naples, and were free to discuss a deal with his representatives - which is believed to have occurred on Thursday. The Italian is likely to be sacked this summer and is on the exit door at Stamford Bridge despite winning the Premier League title last season which was admittedly his first season in charge of the West London club.
Italy worldwide Insigne lauded the capture of ex-AC Milan boss Ancelotti - a Serie A and Champions League victor during his tenure at San Siro - as Napoli look to take the next step in 2018-19 and claim their first Scudetto since 1990.
Meanwhile, Sarri has been linked to both Chelsea and Zenit Saint Petersburg.
Meanwhile, Juventus coach Massimiliano Allegri took to Twitter to congratulate Ancelotti.
Sarri spent much of his career coaching in the lower reaches of Italian football, but he has won many admirers since taking over at Napoli in 2015.