Chelsea boss Frank Lampard insists he isn't worried about Timo Werner.

The German attacker missed a number of chances in the 3-0 win over West Ham United, taking his goalless streak to nine games.

"I'm not worried," Lampard told the club's website. "Every striker will want to be scoring goals, it's what they ultimately get judged on and that's why Timo was a great acquisition for us because of the level of goals he's scored in the last few years.

"He's a player in a new league and we have to give him time to settle but he's getting in positions regularly, he's scaring teams and giving them a problem.

"It's not quite going in for him at the moment but the moment that changes then we'll see goals from Timo Werner for sure."