"My heart is in Philly. That's where I want to end my career," Sproles said, via the team. "That team, the city is like a family."
The former Charger and Saint has spent the past five seasons in Philly, but last summer he announced his intentions to retire after 2018. This late in the offseason, a return seemed unlikely.
"He is the ultimate professional, and a leader on and off the field," the team said in a statement. "He will add another proven talent to our running back room. His dynamic punt return skills are second to none. We can't wait to get started next week."