Aiken was released by the Eagles on Friday.
Aiken played 45 offensive snaps (55 percent) in Sunday's 20-16 win over the Colts but was not targeted in the passing game.
Aiken caught five of his six targets for 39 yards in Sunday's 27-21 loss to the Buccaneers.
Aiken signed a contract with the Eagles on Tuesday, Field Yates of ESPN.com reports.
Aiken (hamstring) was released by the Eagles without an injury designation Monday.
Aiken sustained a hamstring injury during Thursday's preseason game against the Patriots.
Aiken, who totaled 15 receptions for 133 yards on 44 targets in 15 games this season, now heads into free agency for the second straight season.
Aiken played just seven snaps on offense and was not targeted in Sunday's loss to Tennessee.
Aiken (hamstring) doesn't have a designation in advance of Sunday's game against the Titans.
Aiken (hamstring) was limited at practice Wednesday.