Chelsea have made an unbeaten start to the league and have conceded just once from open play. However, former Arsenal star Charlie Nicholas believes they are a 'touch vulnerable' at the back.

Thomas Tuchel's side have dropped points at Liverpool this season and that sees them share top spot with the Reds, who are also unbeaten in the league so far. Chelsea are in the next round of the Carabao Cup and have also made a winning start to their Champions League defense.

However, Charlie Nicholas claims Thomas Tuchel needs to work on Chelsea's defense as there is a lot of insecurity at the back. The former Arsenal man said:

"I still think they are a touch vulnerable at the back. I think that's why they play the back-three because there is a certain amount of insecurity when you go to a back-three."

Chelsea have a big test this weekend with the Blues taking on Manchester City in the Premier League. Pep Guardiola is yet to beat Thomas Tuchel at Chelsea.

Source: sportkeeda