Even RNH,, you don't move him with his bargain AAV
It is contracts like Nurse, Kane and/or Arvidsson, Henrique, J. Skinner and Kulak that you need to move.
I don't think you have a full understanding of thee Oilers cap situation.
Nurse and Kane both have NMC and don't have any reason to waive them.
Draisaitl is getting a $5.5m salary increase next season and Bouchard is projected to increase ~$4-5m. That adds up to ~$10m.
The salary cap is due to increase by ~$4.5m next season. Jeff Skinner will already be off the books next season. Between the salary cap increase and his salary, we're still at a $2-3m defecit before anything else. You don't have any other salary over $1m coming off the books in the offseason.
Kulak has been a bargain at <$3m as a second pairing defenseman. You're not replacing him without downgrading.
Even if Arvidsson or Henrique get moved, which won't be easy without taking any salary back, you're doing it just to keep your head above water. Finding an extra
$5.5m in capspace to upgrade Skinner to Ullmark is not possible.