I think there is a spending floor, too. Didn't the Colts deal with that in the last couple seasons? Something like, over any 3 year period, spend X% of the total salary cap.
Yeah, it’s either 89% or 90% of the salary cap per year, but there’s some creative accounting things they can do to hover a little lower (has to deal with rolling over unused cap but I’m not an expert on it)