Liverpool great Graeme Souness admits he's unconvinced by Chelsea striker Timo Werner after their victory over Sheffield United.

Werner assisted both goals in the Blues' 2-1 victory at Sheffield United on Sunday to make it three wins out of four for new head coach Thomas Tuchel since he replaced Lampard at the Stamford Bridge helm.

Souness told Sky Sports on Sunday night: "I'm yet to be convinced (by Werner). Chelsea are a team that's full of really good players with big technique.

"They get into the last third time and time again and they will wonder what he is doing. They need more from him.

"Put it this way, if he had done the business, Frank would still be in a job."