5 Defenders Manchester could target in the summer transfer window

#1 Kalidou Koulibaly (SSC Napoli)

Napoli lack of ambition could force Koulibaly to leave Naples.

Kalidou Koulibaly is regarded as one of the best centre-backs in the world by many football experts. The Napoli defender has all the attributes of a top defender and at the age of 27 has barely shown any weakness in his game.

The Senegalese is six feet five inches tall which helps him to dominate his opponent in the air and he has got the strength and pace to complement it as well. He is very comfortable playing out from the back too.

Koulibaly has been a rock a the back for Napoli and United would want him to emulate similar performances for them. His presence in United's back four would definitely improve the team and help them challenge for major trophies.

The former Genk defender has been linked with Manchester United on various occasions, but if the Red Devils will have to pay a massive amount to secure his service as many European giants are after him.