Milroe will get added reps at practice ahead of Sunday's matchup with the Cardinals, Gregg Bell of Sports Radio 93.3 KJR Seattle reports.
Milroe is expected to serve as the top backup behind Drew Lock at quarterback in Week 9 with Sam Darnold (quadriceps) sidelined. Milroe has yet to appear in a regular-season contest this season and likely won't do so Sunday unless Lock is forced out of the contest with an injury.