What happened: The front office agreed to terms with the 30 year old on Tuesday. Gaines began his career with the Los Angeles Rams before spending the previous three seasons with the Tampa Bay Buccaneers, appearing in all 17 games last year.

Why it matters: With 14.5 career sacks over 108 appearances, the former fourth round pick offers reliable rotational value for the Buffalo Bills. However, he is not the elite interior defender this roster requires to make a deep postseason push.