Training Camp is over
That open slot is nominally reserved for Aaron Dell once it is safe for him to be waived. It will likely be used to shelve Barabanov for cap savings on off days until then.
Once Dell and his cap hit is down and barring injury, any one of the Taxi Squad can be flipped into the roster for game days as needed without additional transactions (e.g. giving Thornton a break and Robertson a spin).
The Kessel retained salary continues to hurt: could've had Engvall/Agostino up (or Marner could be a 12M guy).