The new CBA instituted a 4 year cash minimum(2013-2016,2017-2020). This article is a well written yet still mind boggling look at just how these numbers are arrived at, the impact on teams, and speaks to the Redskins specifically at one point. Not surprisingly we have a large deficit when looking at cash spending the last two years, which may lead to a few upfront money deals this year and next.
A Look at Cash Spending in the NFL and the Impact on Free Agency - Over the Cap