As of Saturday night the Patriots had not activated running back Shane Vereen from the short-term injured reserve list, but according to a long-time Patriots beat reporter, it's coming soon.
ESPN's Mike Reiss, who has been covering the Patriots for a while, posted on Twitter that he expects Vereen to play Monday at Carolina. The team travels to Charlotte on Sunday and could activate Vereen then. They would also have to activate him to the roster 90 minutes prior to game time on Monday for him to be officially active.