Former Krasnodar assistant manager Sergey Matveyev has revealed what he thinks is Chelsea’s weak link ahead of the Russian side’s Champions League tie against the Blues tonight.

Frank Lampard’s side has plenty of problems to solve at the moment but many fans will be hailing the Chelsea manager’s summer transfer business.

However Matveyev, who only left the club in June, remains unconvinced by one signing in particular.

Manchester United v Chelsea - Premier League

(Photo by Darren Walsh/Chelsea FC via Getty Images)

He told Sportbox.ru: “I think Chelsea’s weak point is the goalkeeper. Edouard Mendy is still adapting.

“For example, in the game against Manchester [United], he played with uncertain feet (referring to Mendy’s near own goal).

“Perhaps this will be a plus for Krasnodar? As well as the fact this is the club’s first home match in the Champions League.”

Krasnodar's head coach Sergey Matveyev speaks during a press...

(Photo by Dimitris Lamppropoulos/SOPA Images/LightRocket via Getty Images)

You could forgive Chelsea fans for being confused by Matveyev’s comments. Many would say the goalkeeping situation has improved massively since Mendy’s arrival from Rennes.

The goalkeeper has yet to concede a goal in the Premier League, with three clean sheets in four appearances in all competitions for Chelsea this season.

Still looking for ‘chemistry’

However, Matveyev wasn’t finished and also had his say about what he sees as inconsistency plaguing Frank Lampard’s team.

He said: “[Chelsea have] lots of new players – and they are still looking for the chemistry.

“For a couple of games, Lampard relied on Tammy Abraham [up front], then in the last few matches it’s Timo Werner.

“Their system also changed, from four at the back to a back three.”

Chelsea Press Conference And Training Session

(Photo by Darren Walsh/Chelsea FC via Getty Images)

Matveyev argued Lampard was still looking for a “skeleton” on which he could base his team.

“So far it hasn’t turned out quite as he wanted,” the former Russia U-18s manager added.

“Defensively they don’t act very well and, under pressure, they make simple mistakes, which led to conceded goals and loss of points.”

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