Kalidou Kouilbaly, Napoli defender, will arrive in London on Thursday night for medicals with Chelsea.
Both clubs have agreed on a fee for Koulibaly ranging from £32 million to £33.7 million.
The 31-year-old has now left for the UK to finalize his transfer to Chelsea.
On Wednesday, transfer expert Fabrizio Romano confirmed this.
Romano tweeted: “Kalidou Koulibaly will undergo the first part of his medical as new Chelsea player on Thursday, the agreement now sealed with Napoli. Koulibaly will be in London tonight.
“Contracts are being prepared, he’s gonna be the second signing after Raheem Sterling.”