Why Chelsea's Kalidou Koulibaly move could reignite their Premier League title ambitions - ESPN

Chelsea needed to sign defenders this summer and in landing Napoli's Kalidou Koulibaly for around €40m, they have made a wonderful choice.

After a hectic few months on and off the pitch, Chelsea were under pressure to strengthen the heart of their defence this summer, having lost two centre-backs in Andreas Christensen and Antonio Rudig… [+6270 chars]

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