This officially opens a three-week window of time for the Colts to activate them from injured reserve and add them to their 53-man roster.
Burton, 28, wound up signing on with the Eagles as an undrafted free agent out of Florida back in 2014. He played out his three-year, $1,537,500 contract with the Eagles before returning to Philadelphia on a one-year restricted deal in 2017.
Burton later signed a four-year, $32 million contract with the Bears as an unrestricted free agent in 2018. Chicago released him with a post-June 1 designation earlier this offseason and he quickly caught on with the Colts.
In 2019, Burton appeared in eight games and recorded 14 receptions for 84 yards receiving (6.0 YPC) and no touchdowns. Pro Football Focus had him rated as the No. 63 overall tight end out of 70 qualifying players.