Klingberg didn't participate in Friday's practice session due to an illness, Tony Brar of Oilers TV reports.
Klingberg made his Oilers debut in Thursday's loss to the Red Wings, recording a shot on goal and a minus-1 rating in 16:39 of ice time. However, he's dealing with an illness a day later, and it's unclear whether the ailment will impact his availability for Saturday's home game against the Maple Leafs.