Major trophies have so far proved elusive for Sarri in his 13-year coaching career, but he insisted that he is driven to bolster his growing reputation with silverware at Stamford Bridge.
A £43m transfer fee was agreed between De Laurentiis and City last month, but Napoli reneged on that deal, leaving club hierarchy stunned.
Maurizio Sarri is Chelsea's new manager.
In an interview with Chelsea's official app, Sarri outlined his intention to put his own stamp on the team.
He becomes their ninth full-time manager since Roman Abramovich bought the club in 2013.
Sarri's appointment was confirmed on Saturday morning, and he said that he is looking forward "to starting work and meeting the players". He was one of the most coveted midfielders in Europe and will become an important member of the playing squad.
The former Italy manager had a year remaining on his current contract and had already taken charge of pre-season preparations at the club's Cobham training ground outside London.
Also, Napoli thrilled audiences across Italy and Europe with their fluid attacking football, with the two 4-1 results against Lazio and the 1-0 victory against Juve highlighting Sarri's tactical nous. They struggled in the second half of the league season though, and finished fifth, missing out on qualification to the Champions League.
"It will be for me very exciting to play against Guardiola, Pochettino, Mourinho, Klopp and the others". He was a revelation during his first campaign leading Chelsea to the Premier League title but he failed to replicate that success this season.