Chelsea boss Frank Lampard has been warned about Timo Werner's form going into their clash with Tottenham.

Former Blues striker Tony Cascarino criticised Werner's performance in their Champions League win at Rennes in midweek.

“Well, Timo Werner has had a stinker tonight," Cascarino said on talkSPORT 2.

“His touch has been all over the place. He's not controlled it. All his lay-offs have been given away.

"I certainly hope Frank Lampard doesn't think he's going to play like this against Spurs at the weekend."