The Cowboys signed Foster (undisclosed) to their practice squad Monday, Ari Meirov of MySportsUpdate reports.
Foster spent the offseason and training camp with the Dolphins, but he was placed on IR with an undisclosed injury and eventually reached an injury settlement before the initial 53-man roster deadline. The speedy wideout now joins the Cowboys practice squad and may be in line for a promotion with Michael Gallup (calf) expected to miss 3-5 weeks.