Klefbom (shoulder) will be ready for the start of Oilers' training camp, Jim Matheson of The Edmonton Journal reports
Klefbom's shoulder surgery was deemed successful and he'll be set for workouts in 5-to-6 weeks.
Klefbom has two points, both assists, in 12 games since returning from an injury.
As expected, Klefbom (undisclosed) will return to the lineup for Friday's game against the Blackhawks.
The Oilers placed Klefbom (undisclosed) on injured reserve Tuesday.
Klefbom (illness) is probable for Sunday's game against the Bruins, Jack Michaels of the Oilers Radio Network reports.
Klefbom scored his second goal of the season and added a helper in Tuesday's lopsided win over the Golden Knights.
Klefbom recorded an assist and minus-2 rating during Saturday's 4-2 loss to the Rangers.
Klefbom led the Oilers with 22:30 of ice time in Wednesday's season-opening win over the Flames.
Klefbom (undisclosed) confirmed that he'll play in Game 7 against the Ducks on Wednesday, Marty Klinkenberg of the Globe and Mail reports.