It was probably past time to for this kind of rule, and Josh McDaniels leaving the St. Louis Rams to become an offensive assistant with the New England Patriots was the straw that broke the camel's back.
The NFL is starting to look over moves such as McDaniels' in the future, ESPN.com reports.
"I'm not sure we ever contemplated the McDaniels scenario, and it will have to be discussed within the competition committee," a source tells ESPN.com.
This may mean McDaniels is in the safe zone for now.
McDaniels and the Patriots already have a deal in place for him to stay on as the offensive coordinator for the 2012 season, replacing Bill O'Brien, who will become the head coach at Penn State when the Patriots' season is complete.