I feel one of these two players has to come to Buffalo. Both 28 years old.
BARRETT RUUD: 6'2 / 241 LBS
Ruud is the exact do-it-all linebacker the Bills desperately need. He is kind of in the same mold as Paul Posluszny, but he's more of a play maker and Buffalo needs to make a change in their line backing corp. Ruud will make a lot of tackles and could bring more impact to the middle of the Bills defense.
Kevin Burnett: 6'3 / 240 LBS
Burnett isn't the savior, but he's a great option for Buffalo. He is an eight-year player that has gotten better each season and has stayed relatively healthy. Burnett would bring athleticism, veteran savvy and a pass rushing boost to the middle of the Bills defense.
Burnett is probably the better option but I'd take Ruud at last resort