Kalou won the Champions League with Torres last year.
"People wanted instant results, and they don't give players time to settle or adapt," Kalou told the Daily Mail.
"People wanted him to be the Fernando who was at Liverpool and were disappointed when it didn't happen.
"He is giving his all for the team, and that is what you need. To have a forward who is giving team-mates options. He is doing well now. He's scoring and people are enjoying what he is doing for the club."
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