The Cowboys designated Diggs (concussion/knee) for return from injured reserve Sunday, Todd Archer of ESPN.com reports.
The transaction opens up a 21-day window for the Cowboys to evaluate Diggs during practice, though team owner Jerry Jones already said Friday that he anticipates the veteran cornerback being available for next Thursday's matchup with the Lions, per Jon Machota of The Athletic. Diggs has been out since Week 6 due to a concussion as well as a right knee injury.