The Chargers signed Hightower to the practice squad Wednesday.
Hightower dealt with a groin injury early in training camp and was ultimately waived by the Eagles ahead of the 53-man roster deadline. However, now the 2020 fifth-round pick will get a new opportunity with the Chargers, who recently placed Jalen Guyton (knee) on IR and haven't had Keenan Allen (hamstring) since Week 1.