Jackson missed Wednesday's padded practice, but he took part Thursday and Friday while still in the protocol. If a player is far enough along in the protocol, he is permitted to practice as long as there is no contact -- one of the final stages of clearing the five-step protocol.
A player must be cleared by an independent neurological consultant in order to play on Sunday.
Jackson spent his first six NFL seasons with the Eagles, scoring 32 touchdowns from 2008-13.
He has five career 1,000-yard receiving seasons, but he struggled in his first season in Tampa, with 50 catches for 668 yards and three touchdowns.
ESPN's Jenna Laine contributed to this report.