Coulter-Nile was not seen at practice on Friday. When asked about his update, bowling coach L. Balaji said: "It is up to the medical staff to decide so I will reserve my comment on that. Injury wise we are all safe."
Coulter-Nile, who was injured during KKR's home game against Rising Pune Supergiant, has so far played six matches and has taken 11 wickets.
Meanwhile, KKR vice-captain Suryakumar Yadav picked up a knock while training.
Suryakumar, who is enduring a lean patch, was injured off a Trent Boult rising delivery and was seen sitting beside the nets for some time before leaving the field.
Suryakumar has played eight times in this edition scoring just 74 runs.