"It didn't take long to get over it," he said, according to Ebenezer Samuel of the New York Daily News.
Bradshaw was released after six seasons with the Giants to clear salary cap space. The 28-year-old won two Super Bowls while in New York and was the leading rusher in both Super Bowl games.
He signed with the Colts in June 2013 but sustained a neck injury in Week 3 last season that caused him to miss the rest of the year. He re-signed with Indianapolis on a one-year deal in March.
Bradshaw has 371 rushing yards, two rushing touchdowns and six receiving touchdowns in eight games this season.
In six years with the Giants, Bradshaw ran for 4,232 yards and 32 touchdowns while adding 1,087 receiving yards.
The Giants (3-4) host Bradshaw and the Colts (5-3) on Monday night.
- Molly Geary