NFC South blog
ESPN.com's Pat Yasinskas writes about all things NFC South in his division blog.
•Blog network: NFL Nation
Harrington had been an unrestricted free agent after serving as New Orleans' third quarterback for 12 games last season. But the Saints had said all along they wanted Harrington back and were just waiting until there was room under the salary cap.
The Saints are set with Drew Brees, who threw for more than 5,000 yards last season, as the starter. But top backup Mark Brunell will turn 39 in September.
Harrington, 30, was a first-round pick by Detroit in 2002. In seven NFL seasons, he has started 76 games while completing 1,459-of-2,538 passes for 14,683 yards with 79 touchdowns and 85 interceptions.