Keo, 28, is a former fifth round pick of the Texans back in 2011. He spent just over four years in Houston before he was waived at the start of the 2014 season. The Bengals later signed Keo to a future/reserve contract in January of last year, but he was unfortunately among their final roster cuts coming out of the preseason.
Interestingly enough, Keo reached out to Broncos DC Wade Phillips about an opportunity with the Broncos and they actually signed him to a contract back towards the end of the year.
In 2015, Keo appeared in four games for the Broncos and recorded five tackles, an interception and a pass defense.