Seattle bought Havili in for a workout on Tuesday along with RB Johri Fogerson, and FB Karl Williams.
Havili, 26, is a former seventh-round pick of the Eagles. He spent his rookie season in Philadelphia before he was traded to the Colts in return for DE Clifton Geathers.
The Colts placed him on the reserve/PUP list back in late August after he underwent surgery on his shoulder, but they later released him due to a failed physical.
Havili caught 18 passes for 128 yards and one touchdown during the 2013 season.