except it's not the way they seem to like doing business. I know your not saying that's what they'll do but just giving an example of how the cap could be unaffected with a new contract, but recent Ram contracts haven't used big signing bonuses.
They've had minimal signing bonus money and plenty of guaranteed roster bonuses for the first few years. That way the cover the all important player guaranteed money but not using signing bonuses stops the guarantee money being carried over all the years, especially the final few years when a player might be in decline. Also important is that it gives more flexibility to trade a player, as it doesn't cause an enormous cap hit for all the signing bonus!
I know