The bulk of the Buffalo Bills’ edge pressure comes from Jerry Hughes. The past couple seasons his stat sheet hasn't been full of flashy sack plays but he is consistently near the top of the NFL in quarterback pressures. His production isn't something easily replicated and outside of Hughes, the Bills are thin as far as pass rushers go.
Hughes will turn 31 just before the start of the 2019 season and he will be the second-highest cap hit on the roster, behind only Star Lotulelei. The large amount of cap space would allow the Bills to hold on to the last year of his deal without being strapped for cash.
If the Bills do surprisingly release Hughes, they would save quite a bit of money for the 2019 season. The team would have to turn to free agency and the NFL Draft to try and replace his production.
Salary cap ramifications of cutting Hughes, numbers via Spotrac:
2019 cap hit: $10.4 million
Salary due: $6.35 million
Roster bonus: $1 million
Workout bonus: $150,000
Annual sack incentives: $1 million
Dead money if cut: $2.9 million
Cap savings if cut: $7.5 million