Marrone, credited for turning around a struggling Syracuse program over the past four years, replaced Chan Gailey, who was fired after three consecutive losing seasons.
The Bills are once again in rebuilding mode under rookie coach Doug Marrone, who took over in January after Chan Gailey was fired following three losing seasons.
Losing Byrd would be a significant blow to the Bills, who once again find themselves in transition this offseason after Chan Gailey was fired following a 6-10 finish.