The Saints have signed CB Jerametrius Butler.  The 29-year old Butler played in 7 games (1 start) for the Bills last season and he made 15 tackles and defensed 2 passes.  He has now played in 70 games (32 starts) in his NFL career and he has made 191 tackles, defensed 24 passes and has 9 interceptions.  Butler will likely be no more than a nickel or dime back that can help out on special teams for the Saints.