John Terry was forced to miss last Friday’s 2-1 defeat to Liverpool after picking up an ankle injury in the 2-2 draw with Swansea City.
The veteran centre-back returned to training this week, but Conte says he will not be ready for the game against Arsene Wenger’s men.
“John didn’t recover. He’s working, but he didn’t recover for the game against Arsenal,” he said.
“I don’t know [when he’ll be back]. In this case, it depends on what the player feels.”