Thomas Tuchel does not have the same level of confidence he once had at Chelsea and has looked nervous in recent weeks, according to Emmanuel Petit.
The Blues have won just one of their last five Premier League games and sit 10 points behind leaders Manchester City ahead of their clash at the Etihad Stadium on Saturday lunchtime.
The European champions however have raised spirits recently in the domestic cups, beating Chesterfield in the FA Cup third round and then qualifying for the final of the Carabao Cup with a 3-0 aggregate victory against Tottenham.