Date published: Wednesday 28th November 2018 2:58
The Blues are already through to the Europa League last 32 and need a point to win Group L with one match to go.
Sarri said: “I am worried because 25 days ago he had a back injury. Now an ankle. He has lost a lot of training. It’s normal at the moment he isn’t at the top of his physical condition.”
Striker Olivier Giroud says the Blues are determined to show their strength against PAOK, who they beat 1-0 in Greece in September.
He added: “The manager was not happy at all with our performance. It’s our first defeat this season, it has been hard to accept it. We want to bounce back tomorrow in the Europa League and after in the game against Fulham.
“We just want to make it right in the next game.”