The popular undrafted rookie free agent signing in town is obviously the signing of Houston Cougars legend Case Keenum. But the truth is, Keenum is likely to be the third-string quarterback and if Texans fans are hopeful, he won't see the field after preseason action.

For the National Football Post's money, picking up BYU defensive tackle Loni Fangupo is not only the Texans' best rookie free agent signing, but it's among the best in the league. This from the Post regarding the Fangupo signing:

A naturally strong kid with a great attitude and work rate. Needs to improve pad level, but has the kind of natural power and work ethic to make it with some time.

Fangupo could be a late bloomer in the NFL, since he bounced around a bit in college, going from a community college in San Antonio, to USC then to BYU. But he should be able to find a role in the 3-4 scheme.

Read more about the Texans at the Battle Red Blog.