Having addressed two key areas by agreeing to terms with edge rusher Joey Bosa and wide receiver Josh Palmer, the Buffalo Bills have rung the bell on yet another spot that needed help: Defensive tackle.

The Bills began Monday with 13 of their players entering unrestricted free agency and the only one who found a new home was wide receiver Mack Hollins who agreed to a two-year, $8.4 million contract with the AFC East rival New England Patriots, certainly a monetary value the Bills did not believe was in their own best interest.