The Saints have placed TE Dan Campbell on injured reserve, ending his 10th NFL season before it began. Campbell had lingering knee issues and had not been practicing.
The Saints also waived rookie guard Joe McMahon, recently picked up by the Saints after he went unselected in the NFL's Supplement Draft in late July.
Those moves made room for first round pick Malcolm Jenkins to join the active roster after signing on Monday, and free agent guard Nathan Bennett.
Bennett, three years out of Clemson, had spent some time with the Carolina Panthers in 2007, training camp with the Browns and later on Baltimore's practice squad in 2008 and on Atlanta's practice squad last season. He was cut by Atlanta in April of this year and has not appeared in a game yet.