Not concerned at all. BB will be resigned.
BB current cap hit is $5.875. His QO will be $7.5 (cuz he's grandfathered under the old QO terms). Predicting he is a 30+ goal scorer, I'm guessing his range will be $7.5-8.5. If however, he performs above expectations (say 40+ goals), then it might creep up to $9.
So let's just say it's $8.5M. That's a difference of $2.625M from his current cap.
Right now we have wasted cap space from the buyouts and Luongo recapture penalty for about $3.5M. However next year the buyout penalty is $2.4M. So that's $1M right there that can go to BB. Also the cap supposedly goes up next year by $1M. So we just need to find $0.625M from the roster. Bring up DiPietro and let go Halak next year and we just make it under the cap.
The real tough one will be the 2023-24 season when Miller and Bo contracts are up. Most likely will have to let Miller go in order to pay Bo.