The New York Giants worked out defensive backs Elie Bouka and Robert Nelson this week, according to Inside Football's Patricia Traina.
Bouka, 25, who spent last year on the Arizona Cardinals' injured reserve list with a hamstring injury, was waived in August with an ankle injury. He worked out with the New York Jets and Philadelphia Eagles earlier in the month, according to 3 Down Nation's Justin Dunk.
Bouka was a third-round pick by the Canadian Football League's Saskatchewan Roughriders.
Nelson, 27, has played 18 games over the past three seasons, recording 17 total tackles, two passes defensed and one interception in 11 games with the Texans in 2016.