The Saints signed Hightower on Monday, Evan Woodbery of the New Orleans Times-Picayune reports.
During Sunday's win against the Giants, the Saints' backfield suffered the loss of pass-catching back Khiry Robinson, who has already undergone surgery to repair a broken tibia. Hightower previously displayed some chops as a receiver, racking up 128 receptions in 53 career games between 2008 and 2011. However, he made his last appearance in 2011, so expectations should be tempered in the Saints' upcoming outings.