A turbulent summer for Chelsea concluded with Antonio Conte splashing huge money on several major talents including Alvaro Morata, Antonio Rudiger and Davide Zappacosta.
It was a mixed window for the Blues who missed out on Romelu Lukaku among other top targets, but their new boys have made impressive starts in the Premier League.
Not only have the additions freshened Conte's squad, but developing talents and influential figures from last season have continued to grow – in quality and value.
CLICK THROUGH THE GALLERY TO REVEAL WHICH CHELSEA PLAYERS' VALUES INCREASED MOST SINCE THE SUMMER ACCORDING TO CIES FOOTBALL OBSERVATORY.
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