Thomas, the NFL's leading receiver a year ago, suffered the injury in Week 1 and was expected to miss multiple weeks. There was growing optimism he'd be able to suit up in Week 2, but he was ultimately ruled out before the Saints' eventual 34-24 loss to the Las Vegas Raiders.
Thomas, 27, led the league with 1,725 yards and an NFL-record 149 catches in 2019. Quarterback Drew Brees and the Saints are 0-2 without him in the lineup.
New Orleans will miss Thomas' presence in a potential shootout with the Packers, who've scored more than 40 points in both of their games this season.