Kalou jumps to defence of Chelsea youngster 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."