Maurizio Sarri is hoping Eden Hazard will play for Crystal Palace on Sunday after the Chelsea midfielder recovered from a back injury sustained two weeks ago.
Hazard has missed Chelsea's last three games, but was fit to train with his team-mates in the second half of the week.
Blues boss Sarri is confident that Hazard will take part in the Palace visit to Stamford Bridge, but he is still waiting for a decision whether the Belgian playmaker will start or save on the bench.
"Yesterday, Eden has played a great part in training the club," Sarri told reporters on Friday.
"He may not be ready to play 90 minutes this season because he was the first training in the last couple of weeks.
"But he may be able to play 40, 45 minutes, so it is important for us."
If Hazard starts on Sunday, it is considered to be the case that Sarri added: "I do not know, I want to speak first."
Staying at Hazard will be a great addition to Chelsea after starting the season.
The 27-year-old scored 8 goals for Chelsea, scoring his best goal in the League Cup win over Liverpool last season.
Chelsea sit third in the Premier League, two points behind leaders Manchester City, after a fine start to the season.
Prior to the match against Palace, Sarri went on to say that Gary Cahill made the club captain's official captain even though the central defender did not play well this season.
Cahill has already admitted he would leave Chelsea to play on a regular basis, but Sarri has backed his future at the Blues and returned to the captain after refusing to comment on the national team.
"The captain is Cahill, if he is not on the pitch, Cesar Azpilicueta," said Sarri.
"Our captain is Cahill because Cahill was the captain last season, and he spoke to his friends, and everybody told me he was the best captain."
Asked if he would name Cahill as a captain, he would be staying at Chelsea until at least the end of the season. Sarri said: "I do not know, it depends on him, I think.
"He has played in the last seven games, eight games, relies on him, my team, but for me Cahill is very important at the pitch."