Salomon Kalou has jumped to the defence of Chelsea teammate Gael Kakuta.
The French youngster struggled to make an impact during victory over MSK Zilina this week.
Kalou insisted: "It's not easy when you don't play at all and then play in a Champions League game and try to have a good performance.
"I've been there and know how it feels as a young kid to play this kind of game. You can't judge them on one game."
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