Ian Rapoport of NFL Network provided an update on Luck's status Sunday, saying to "keep an eye" on Indy's Week 6 matchup at the Tennessee Titans:
Luck, 28, underwent shoulder surgery in January to repair an injury he originally suffered in 2015. The Colts removed him from the physically unable to perform list before the season began, so Luck is eligible to play now. Had Luck not planned to play until after Week 6, Indianapolis could have kept him on the PUP list and had an extra roster spot.
Colts coach Chuck Pagano said Monday there was no doubt Luck will play this season. No firm timetable has been set for his return, though.
"I don't know about practice," Pagano told reporters. "I guess when the doctors clear him to practice and he puts the red jersey on, you guys see him out there, I see him at the same time, we'll know he's ready to go and start practicing."
The Colts are 0-2 entering Sunday and have had next to no success offensively. They have already shuffled through two starting quarterbacks, with Jacoby Brissett set to make his second straight start in Week 3's matchup against the Cleveland Browns.