Antonio Conte says he will assess the fitness of one or two Chelsea players before naming his side to take on Manchester City.
The Premier League leaders face a test of their title credentials against third-placed City at the Emirates Stadium on Saturday.
And Blues boss Conte says he will not decide his starting line-up until shortly before the match.
“We have to check the physical condition of one or two players and then tomorrow decide the line-up,” the Italian said.
Conte was reluctant to say which Chelsea players would be assessed.
“I prefer to keep this a secret,” he said.