Collars on a few back 9 greens

I have had a few questions arise regarding the few collars on a few holes on the back side. These collars were stressed from the aerification process. These collars were weakened from dragging the sand over the greens. Bentgrass is extremely resilient, so I have no concern over these collars. We are bringing several pallets of sod in next week, if these collars continue to heal slowly, we will sod them out to show a more immediate recovery.