Yeah, I mean, sure, that would work. Of course you would need to throw AB in there for matching purposes, too, if you have any hope of signing Hayward. NOP would love their newly upgraded back court.
I would say the Cousins ship has probably sailed on by, though. It seems like we could have had him last season...unless Ainge was making Hayward a priority.
They are all expiring contracts so that shouldn't be a factor either.