Tells me 2 things:
1. They couldn't agree on a long term deal to buy out UFA years, so they said let's get 1 year locked up and go from there.
AND/OR
2. They know the Rangers can't afford a cap hit in the 4's or low 5's for Zucc this upcoming season, so they said let's settle on this now, and in Jan we'll sign you for something in the 4's per season for 3 or 4 years (Zucc cannot sign a new deal until after Jan 1). Also gives us 3 months to see if this past season was for real with Zucc.
After this we have about 8.8 mill left. Figure around 2.5 for CK. 1.2 for Moore. 4.5 for Brass. Leaves us with maybe 500 K to 1 mill left under the cap +/- depending on which players we fill out the roster with.