3 players that Manchester United should look to sign in the summer 

#1 Kalidou Koulibaly

Koulibaly is a solid centre back

Kalidou Koulibaly has really come into his own this season for Napoli. The Senegalese defender is now considered by many to be one of the best centre backs in the world at the moment and undoubtedly he has played like one.

Koulibaly can do just what van Dijk has done at Liverpool, he could straight away fix Manchester United's backline and he may also improve the players who he is playing with. Koulibaly is brilliant on the ball and is a commanding presence at the back.

The Napoli defender is very calm and can keep possession in the trickiest of situations. Manchester United may not get him for cheap, but he definitely will be worth any money the Red Devils pay for him.

In terms of stats in the Serie A this season, Koulibaly has won 67 percent of his tackles and 56 percent of his duels. He posses a passing accuracy of 88 percent and has made 31 interceptions and 88 clearances.