Liverpool striker Danny Sturridge says he valued his time at Chelsea working with Didier Drogba.
Sturridge admits Drogba's influence has rubbed off on him.
"Being strong mentally is the one thing that can separate you from anyone else," said Sturridge.
"When I worked with Drogba at Chelsea, the one strength he had above everybody was his mental strength.
"I learned a lot from working with him about what it takes to be a top player. Hopefully I'll become one."