Reich said it’s an old injury, possibly from high school, and a broken bone came loose in Wentz’s foot.
Wentz felt a “twinge in his foot” when he rolled out and planted to throw late in last Thursday’s practice, offensive coordinator Marcus Brady said Friday.
Reich said Jacob Eason will continue to receive first-ream reps in practice with Wentz sidelined.
“The job is Jacob’s right now. He has to prove it, he knows that. Jacob’s in the drivers seat,” he told reporters.
The Colts acquired Wentz during the offseason and reunited him with Reich by giving the Philadelphia Eagles a third-round pick in this year’s draft and a conditional second-round pick in the 2022 draft.
Wentz was benched in favor of Jalen Hurts with the Eagles last season after being sacked 50 times and throwing 15 interceptions in 12 games.
Injuries have been part of Wentz’s first five years in the NFL. He suffered a season-ending torn ACL late in the 2017 season. He has played a full season just twice in his career.
ESPN’s Mike Wells contributed to this report.