Harry hurt his ankle Aug. 6 in practice and was placed on IR Sept. 1. He returned to practice last Wednesday, beginning a 21-day window to add him to the active roster.
The 6-4, 225-pounder was acquired by the Bears July 13 in a trade with the Patriots in exchange for a 2024 seventh-round draft pick.
Selected by New England with the 32nd choice in the first round of the 2019 draft out of Arizona State, Harry has appeared in 33 NFL games with 18 starts over three seasons, catching 57 passes for 598 yards and four touchdowns.
His most productive campaign was in 2020 when he had 33 receptions for 309 yards and two TDs. Last year he played in 12 games with four starts, catching 12 passes for 184 yards.
Asked last week what Harry would bring to the Bears offense, quarterback Justin Fields said: "He would be a good matchup for smaller DBs. One on one, especially red zone, just throwing up a jump ball to him, that's one of the things he does really well. So just being able to throw more 50-50 balls."