Ansah was one of the premier pass-rushers in the league whe he totalled 28.5 sacks between 2015-2017. His presence would help bolster what is already a great defensive line in San Francisco. Last year the 49er's defense allowed 281.8 yards per game (second in the league) and sacked the opposing quarterback 48 times (fifth in the league). At 31 years old and coming off a mediocre season in Seattle, Ansah probably wouldn't be much more than a rotational pass-rusher. His IDP value is pretty low but he would help definitely the 49er's DST, which is already ranked as our experts' number one defense.