The Texans are retooling the safety position this off-season, signing Kendrick Lewis, a mediocre starting/solid reserve safety, keeping Danieal Manning on a pay cut off of an injury, and now signing Chris Clemons. They also have DJ Swearinger and Shiloh Keo, who were their starters last season after Manning got hurt and Ed Reed got hurt. Those 5 are all fairly inexpensive and will all compete for the two starting jobs.
I think Chris Clemons has the best chance to be one of the starters (my guess is Swearinger, a 2013 2nd round pick, will win the other job). I have no idea why Clemons was still available on the open market this late in free agency and how the Texans were able to get him for just 2.7 million over 2 years. He was Pro Football Focus’ 19th ranked safety last season and 25th ranked safety in 2012 in two years as a starter in Miami, his only two years as a starter. For comparison, the Dolphins replaced him with Louis Delmas, an inferior safety, for 3.5 million over 1 year. That wasn’t that bad of a deal, but this was a steal.