Chelsea have made a habit of raiding Serie A for new signings over the last 20 years, but Kalidou Koulibaly could prove to be the best yet.
Andriy Shevchenko, Jorginho, Marcos Alonso, Hernan Crespo and many others have made the move to Stamford Bridge but Koulibaly is a statement arrival and will radically change the make up of Thomas Tuchel's team.
The defender was keen on a move to the Premier League, with Tuchel a big factor in encouraging him to reject Juventus and instead sign a four-year contract with the Blues.