Foster, who the Cardinals signed off New England's practice squad last year, is a potential change-of-pace back. As Fansided.com notes, the former Arizona State Sun Devil is best-suited for a complementary role. Foster’s strength is his pass-catching ability, evidenced by the fact that the 24-year-old has more receptions (17) than carries (13) during his time in the NFL.
Those 30 career touches don't instill great confidence that Foster is ready to handle a significant role.
2018 Bottom Line
Playing behind David Johnson—who is more than capable of serving as his own change-of-pace option, will keep Foster from fantasy relevance—barring injuries or other attrition.