Booker has been assigned to Charlotte out of spring training after just Single A last year. I would not be surprised to see him called up this year.
http://www.milb.com/player/index.jsp?player_id=664689#/career/R/hitting/2017/ALL
http://www.milb.com/player/index.jsp?player_id=664689#/career/R/hitting/2017/ALL