Antonio Conte appears to have got his transfer business well under way at Chelsea. Michy Batshuayi and N'Golo Kante have already joined, and it seems there is more to come.
The Italian is reportedly keen to add to his defence this summer, and it is easy to see why. Chelsea had a number of problems at centre-back last season, a huge change from the 2014/15 season where they had the top defence in the league.
In terms of current centre-backs in their squad, Chelsea are clearly short. John Terry and Gary Cahill were far from their best last season, while Kurt Zouma will miss the start of the coming campaign with injury.
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Branislav Ivanovic is more than capable of playing in the centre of defence, a role he fulfilled at the end of last season after a torrid stint at right-back.
From what we have seen from Conte, as manager of Juventus and Italy, he likes to play a system with three centre-backs. The Blues will certainly be looking to bring in a new central defender to give them the squad depth which will allow them to play 3-5-2.
Napoli's Kalidou Koulibaly is a man who has been linked with a move to Stamford Bridge, and he would certainly fit the bill.
The Senegalese international has just had an impressive season in Serie A, and he looks set to be on the move.
The 25-year-old has attracted interest from both Chelsea and Everton, while his agent has told reporters he is looking to leave Napoli. Recent reports have claimed that Chelsea have made a £38 million offer for the centre-back, but the Italian outfit is yet to respond.
Koulibaly would be an excellent addition for the Blues. He has shown in Serie A over the past couple of years that he has an excellent physical presence and good positional knowledge.
In a league with so many tall, strong strikers, he could be the perfect man for Chelsea.
He also has a good turn of place, unlike the current Chelsea centre-backs, that will give Conte another option with his style of defending.
Koulibaly also has the ability to play in a defensive midfield role as well, and is an accomplished passer of the ball, something that will suit the way that Chelsea have played in recent years.
Despite the fact he will cost Chelsea an awful lot of money, Koulibaly would definitely be a good buy for the Blues as they are certainly in need of a new centre-back.
How much should Chelsea pay for Kalidou Koulibaly? Have YOUR say in the comment section below!