Herndon was released by New Orleans on Tuesday, Katherine Terrell of ESPN.com reports.
The Saints signed Herndon on Wednesday, Katherine Terrell of ESPN.com reports.
Herndon is expected to sign with the Saints, Ian Rapoport of NFL Network reports.
The Vikings didn't reinstate Herndon (illness) from the reserve/COVID-19 list prior to Sunday's game against the Bears, Will Ragatz of SI.com reports.
Herndon (neck) was placed on the reserve/COVID-19 list Tuesday.
Herndon played 13 offensive snaps and wasn't targeted during Sunday's 29-27 loss to the Lions.
Herndon didn't record a target during Sunday's 34-26 loss to the 49ers.
Herndon did not have a target and played just 12 snaps on offense in Sunday's loss at Arizona.