Clarke: Zola growing into West Ham job
Clarke told whufc.com: "I think he understands the role more. You've always got some problem. There's always someone coming to you asking for an opinion. There's always someone wanting advice on something. He is very intelligent, Franco, and he's quickly picked up that it's not an easy job.
"When we started we said we'd try to smile every day and if he can get me to smile every day, he's doing well," he joked. "My job as the assistant manager is to give him as much help as I can and that's what I tried to do in the roles I had at Chelsea."