Actually the more challenging part may be this year. Friedman was speculating on the cap going to $95-97M which would be reasonable given revenues. Bettman threw a slight bit of cold water on that but did not rule it out completely. In that range the Oilers would probably be able to afford both Kane and EK at 50%. This year though, unless someone is on LTIR it would be tough. They could move J. Skinner and make it work if they waived Perry, Kapanen or Brown and replace Ryan with Philp. But that is a lot of moving parts. It might make more sense to make a move for EK in the off season rather than this year if he was a target.
Honestly, right now I am completely unsure of what the Oilers plan should be. As
@Soundwave points out after their 3 game debacle at the start of the year this team has been third best in the league in GA/gm even with shaky goaltending at times. At full strength they can go with many combinations that give them balance forwards. Adding an impact player would be great, but where that player plays is up in the air for me right now.