The 49ers are taking a look at former Bills and Saints free safety Jairus Byrd among other defensive backs today, according to ESPN.
Byrd, 30, was a second-round pick by Buffalo in 2009 who has 97 starts over that span. He also plays a position critical to the 49ers' defense but one in which they made no additions in free agency or the draft.
Jimmie Ward is the would-be starter at free safety this season. Vinnie Sunseri has been lining up with the second-team defense while undrafted Lorenzo Jerome has been the third-team safety.
Byrd must convince the 49ers he can hold up through a season.