Harrison was evaluated for a head injury in Sunday's Week 6 game against Green Bay, and he's since been ruled out from returning.
Harrison took a hard hit on an incomplete pass thrown his way in the second quarter and staggered back to the ground following the play. He was subsequently evaluated for a concussion before being ruled out in the third quarter. Harrison didn't catch either of his two targets in the contest, and Michael Wilson will move into the No. 1 receiver role for the Cardinals with the rookie done for the day.