2019 Salary Cap - Bengals Cap Space

[Catmandude123]

(12-11-2018, 08:01 PM)Bengalholic Wrote: Salary cap update for 2019:

NFL told its teams today that the 2019 salary cap is projected to be in the range of $187-to-$191.1 millon.

— Adam Schefter (@AdamSchefter) December 11, 2018

The Bengals also have about 8.5m that can be rolled over, making their total projected cap to be 195.5-199.6m.

Right now, the Bengals look to have 138.6m allocated in total cap for 2019, counting dead money. 

That seems to leave them with about 57-61m in cap space next year, depending on the final numbers.

Are the existing contracts guaranteed? Underperforming existing players who have no more or little guaranteed money left on their current contracts ought to have to renegotiate their contracts(ie Burfict, Dre, Glenn). Other teams do this all the time why don't the Bengals?