The news comes after the Ivorian, 34, scored the winning penalty that sealed the Blues’ first Champions League crown in Saturday’s shootout victory over Bayern Munich.
“We [Drogba and his Chelsea team-mates] will not be together next season,” Drogba was quoted saying in France Football magazine.
“As I decided to leave, I wanted to tell them straight in the eye. Except that I could not do it. They made me crack.”
Drogba, who was said to be holding out for an offer of a two-year deal from the club, has been heavily linked with a move to Shanghai Shenhua, the Chinese club Nicolas Anelka joined in January.
The striker, who reportedly informed his team-mates of his decision during Chelsea’s trophy parade on Monday, added: “Even though it’s been three years since I said I wanted to leave, I find it hard to admit that it’s over with this club – especially as I did not feel like this.
“But I could not see myself sitting on the bench to watch others play when the club plans to set up a new team.
“So that’s it – I am preparing for my leap into the unknown. It’s going to be another adventure.”
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news