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#4 Kalidou Koulibaly
Kalidou Koulibaly has established himself as a reliable center-back this season. His stellar performances were one of the key reasons of Napoli's domestic success as they finished 2nd in Serie A, only 4 points adrift of Juventus.
The Senegalese defender is well-known for his passing ability and versatility, which enabled him to excel in Maurizio Sarri's possession-based system. He is also strong in the air, making him a genuine goal-threat in the set pieces.
The 26-year-old has made 45 appearances for Napoli across all competitions in 2017-18. In Serie A, he has won 40 tackles this season with a success rate of 48% and has made 37 interceptions, 113 clearances and 14 blocks.
Koulibaly is one of the most sought-after defenders in the current transfer window.
