The Texans worked out running backs Jeremy Hill and Elijah McGuire, according to league sources not authorized to speak publicly.
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Hill had a strong work out, but sources said he isn't being signed to a contract at this time.
A former Cincinnati Bengals second-round draft pick who has also played for the New England Patriots, Hill has rushed for 2,898 career yards and 29 touchdowns.
Hill is healthy now after tearing his anterior cruciate ligament last September while playing for New England.
McGuire is a sixth-round draft pick from Louisiana-Lafayette who has played for the New York Jets and Cleveland Browns.