Rattie agreed Tuesday to a one-year contract with Lokomotiv Yaroslavl of the KHL, Igor Eronko of Sport-Express reports.
Rattie will not be given a qualifying offer by the Oilers, making him a free agent July 1, Jason Gregor of OilersNation.com reports.
Rattie (lower body) will be in the lineup for Wednesday's tilt against Pittsburgh.
Rattie (lower body) skated with the team Tuesday and is expected to play in Wednesday's contest against the Penguins, Daniel Nugent-Bowman of The Athletic reports.
Rattie didn't suffer a broken foot against San Jose on Saturday, but is still unable to get on the ice, Jim Matheson of the Edmonton Journal reports.
Rattie didn't come out of the locker room for the second period Saturday against the Sharks after blocking a shot with his left leg/foot, Daniel Nugent-Bowman of The Athletic reports.
Rattie was placed on waivers Monday.
Rattie picked up three assists in Saturday's 7-4 loss to the Sharks.
Rattie recorded one shot on goal in 8:30 TOI during Tuesday's overtime win versus the Sharks.
Rattie scored a goal Sunday in a 4-1 loss to the Avalanche.