You cannot buyout Ference this year. Carrying over $1M in dead cap space into the year McDavid comes off his ELC would be too big a risk. TO me that looks like the year where the Oilers are most vulnerable in terms of the cap.
I would only consider a buyout this year if Chia felt he had anther significant deal in place. Next year the cap could be relatively flat again and there are lots of very good players looking for raises. And like this year a lot of the normal big players will be tight against the cap. It would be prudent to keep some of your powder dry just in case.
Assuming Schultz has the same salary as last year, and that McDavid will earn his full bonus, this is roughly the worst case scenario as of right now.
NHLGuru.net user generated Line-Up
FORWARDS
B. Pouliot ($ 4,000,000) --- R. Nugent-Hopkins ($ 6,000,000) --- J. Eberle ($ 6,000,000)
T. Hall ($ 6,000,000) --- C. McDavid ($ 3,775,000) --- N. Yakupov ($ 2,500,000)
A. Lander ($ 987,500) --- L. Draisaitl ($ 925,000) --- T. Purcell ($ 4,500,000)
M. Hendricks ($ 1,850,000) --- M. Letestu ($ 1,800,000) --- L. Korpikoski ($ 2,500,000)
DEFENCE
A. Sekera ($ 5,500,000) --- J. Schultz ($ 3,675,000)
O. Klefbom ($ 894,167) --- M. Fayne ($ 3,625,000)
G. Reinhart ($ 863,333) --- E. Gryba ($ 1,250,000)
GOAL
B. Scrivens ($ 2,300,000)
Extras
R. Klinkhammer ($ 725,000) --- N. Nikitin ($ 4,500,000) --- C. Talbot ($ 1,450,000) --- A. Ference ($ 3,250,000)
---------------------------------------------------
2015 NHL Cap Limit: $ 71,400,000
23 Player Cap Used: $ 68,870,000
Buried/Retained Cap: + $ 0
Retained Other Team: - $ 0
Injured Reserve: - $ 0
Cap Space Available: $ 2,530,000
I think a trained monkey could get this to $5M without executing a buyout if it was necessary.