The NFL will update its teams this week on the repositioning of the umpire to the offensive backfield.
A memo will be sent to the 32 clubs outlining how the change will work during the season.
In March, the league decided for safety reasons to move umpires
from the middle of the defense near the linebackers to behind the
deepest running back.
But Colts quarterback Peyton Manning complained in a preseason game at Green Bay. He was twice called for illegal snaps when the umpire couldn't get into position quickly enough.
The league moved umpires back to their old spots during the final five minutes of last Thursday's final exhibition games. Previously they were in the old spot for only the final two minutes of each half.