I think it is highly unlikely. With that being said ( not sure if possible ) but can Hayward be signed and Griffin traded for using sign and trade/bird right players?
Think that would be the only way, but I'm not the one to ask if possible.
I'd have to look at the numbers, but I think it might be technically possible. We'd probably have to ravage our roster to do so, though, because their contracts will be so large. In terms of the cap, signing Hayward or Griffin then trading for Butler or George is FAR easier.
Edit: Wait, if you're asking if we could sign and trade KO, for example, at $15M per year then trade that contract to help match Griffin's, I don't believe that is possible. However, someone more knowledgable than me would have to confirm, it might be possible if Griffin declines his ETO (not happening).