The Texans signed Davis off the Browns' practice squad Tuesday, Aaron Wilson of Sportstalk 790 Houston reports.
Davis led the Browns with 154 receiving yards during the preseason, but he was never able to crack the active roster. Nico Collins (shoulder) is already on IR, and Danny Amendola is dealing with a thigh injury that kept him out of Week 3, so Davis has a chance for an extended stay in Houston.