The Blues take on Galatasaray at Stamford Bridge in their second leg of their last-16 Champions League tie with things poised at 1-1.
"It is the club where I experienced everything," Drogba told UEFA's website.
"I experienced the highest level, big games - it allowed me to get closer to the best players in the world.
"It is a very special moment because I do not know what my reaction will be. I am quite apprehensive about it."
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