Coach Vance Joseph has stated that he expects to use two or three main backs, including 2017 sixth-round pick De'Angelo Henderson and rookie Royce Freeman.
Booker is a good bet to play in obvious passing situations, but he's yet to show explosiveness as a runner, averaging just 3.6 yards on 253 carries over two years. In fact, he's managed just one run over 20 yards in his career to date, per NFL Network analyst Terrell Davis.
This battle figures to play out for the next few weeks of camp and preseason action. The smart money is on Freeman emerging as the featured runner, with Booker subbing in for passing downs and Henderson adding depth.