Chelsea manager Frank Lampard conceded Timo Werner didn't offer his side enough with or without the ball during a 3-1 loss against Arsenal on Saturday.
Werner, who has now gone 10 games without a goal in all competitions for the Blues, was replaced at half-time by Callum Hudson-Odoi with Lampard's side trailing 2-0.
The change would fail to turn the tide however with Bukayo Saka adding the Gunners' third in the 56th minute before Tammy Abraham bagged a consolation goal five minutes before full-time.
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Currently experiencing his longest goal drought at club level since 2016, Werner is seemingly struggling after an encouraging start to life at Stamford Bridge with Lampard desperate to get more out of the German international.