If that eases your mind 
But the market for pg's isn't huge, and theres a lot of them to be had. And if you throw a max at Eric Gordon (for two years) noone will match. They just have nothing to lose this next couple of years...
Nothing to lose except just as many games as this year when they max Eric Gordon.
Cap is projected to jump to $90 mil. Brooklyn's cap space is middle of the pack. Some teams that will have around the same amount or more space include Phoenix, New York, Dallas, Indy, Detroit, Atlanta, Miami, Washington, Boston, LAL, Philly. There are others but those are just the big markets and/or potentially aggressive spenders.
As of now, zero teams project to be above the cap, and only Cleveland is within $10 mil of that $90 mil figure. Basically, every team will have the ability to retain their guys within the cap/under the tax if they're willing to pony up the dough, and with the cap projected to jump again the following summer I'm guessing many teams will be willing.
You also have to remember that sending out offer sheets ties up cap space for a week until the team does or doesn't match. If that's their plan A I imagine they will not like the results.