Ivanovic admits the clubâ€™s pre-season tour of America does not feel quite the same without Drogba.
The Ivorian left Stamford Bridge this summer after eight years at the club - his last kick of a ball for the Blues securing their historic Champions League triumph in Munich.
And Ivanovic said: "Itâ€™s really strange not having Didier with us. We miss him.
"A lot of us are still waiting for him to come back - itâ€™s like something is missing.
"But I hope we donâ€™t miss him on the pitch because he was a key player for us."