Could Ingram play in 2013?

After San Diego Chargers OLB Melvin Ingram tore his ACL in offseason workouts last week, it was expected that he'd miss the duration of the 2013 NFL season; furthermore, his injury was the acute reason behind the club signing Dwight Freeney. However, it doesn't appear that the Chargers are giving up hope on the former first-rounder making a return at some point this season.