Doyle announced his retirement from the NFL on Monday.
Doyle, who entered the league as an undrafted free agent in 2013, finished the 2021 campaign with 29 catches (on 43 targets) for 302 yards and three touchdowns in 17 games. With the 31-year-old no longer in the mix and Mo Alie-Cox eligible to become an unrestricted free agent, the composition of the Colts' tight-end corps this coming season remains to be determined. Kylen Granson -- a 2021 fourth-round pick -- profiles as the team's top option at the position currently under contract for 2022.