Mack plans to sign with the Texans' practice squad upon clearing waivers Wednesday, Adam Schefter of ESPN reports.
Mack was a surprising roster cut Tuesday, but he looks poised to remain a backfield option for Houston after all. For now, Dameon Pierce and Rex Burkhead are the top available options on the team's 53-man roster, but if Mack indeed lands on the team's practice squad, he'll be eligible for elevation whenever the Texans require an additional option in the backfield.