The centre-back was a regular fixture in the Partenopei's set-up that finished second behind Juventus in the Italian top-flight last season and has made his way into the annual selection for the third time in a row.
Koulibaly who made the outstanding team selection last year, returned five goals in 35 matches last season -
His solid defensive work limited Napoli to just three losses as they kept 19 clean slates in the 2017-18 Serie A campaign.
Orgoglioso di stare, per la 3ª stagione consecutiva, nella #Top11 #AIC. Grazie ai miei compagni: per me una #famiglia. E grazie ai tanti colleghi che mi hanno votato: avversari in campo, nemici mai 💪🏿— Koulibaly Kalidou (@kkoulibaly26) December 3, 2018
🏆 @GranGalaAIC 🇮🇹 #GGDC2018 🇸🇳 pic.twitter.com/0sSrmMGzU1
The 27-year-old joins Juventus trio Giorgio Chiellini, Alex Sandro and Cancelo to form the back-line while Inter Milan duo Mauro Icardi and Radja Nainggolan, Lazio's Sergej Milinkovic-Savic and Ciro Immobile, Liverpool goalkeeper Alisson Becker, Miralem Pjanic and Paulo Dybala complete the squad.
The Senegalese defender who was in action Napoli's 2-1 win over Atalanta on Monday night has played every match under Carlo Ancelotti this season.
His fine form in the Italian top-flight has attracted interests from Manchester United and Barcelona but Napoli moved swiftly to hand him a five-year contract that will see him remain at the Stadio San Paolo until 2023.