The Indianapolis Star's Zak Keefer spoke to a source who said Hilton is "giving us everything he's got" and "all in" ahead of the 2018 season.
Having finished with 1,000-plus receiving yards in each of the preceding four years, Hilton had 966 yards and four touchdowns on 57 receptions in 2017.
His drop in production was likely due in large part to Andrew Luck's season-long shoulder injury. Jacoby Brissett performed well in Luck's absence, but he's clearly not the same caliber of passer Luck is.
Upon returning to the team for offseason workouts in April, Luck told reporters he hadn't yet recovered to the point where he can start throwing a football, but the expectation is the three-time Pro Bowler will be ready to go in time for the regular season.
Having a healthy Luck would be a big boost for Hilton.
The six-year veteran also indicated the timing was right for the Colts to make the coaching switch from Chuck Pagano to Reich.
"I think it was," he said in April, per Keefer. "Not my decision, but at the end of the day, I think it was. We all understand with this new coaching staff we gotta bring it every day."
Keefer noted Hilton is the third longest-tenured member of the team, having been selected by Indianapolis in the third round of the 2012 draft. Getting an experienced veteran such as Hilton onboard with Reich so quickly is important for Indianapolis, as it's bound to have a domino effect for the rest of the roster.