Houston Chronicle sportswriter Mickey Herskowitz passes along this story about those two NFL coaching icons, George Halas and Vince Lombardi:

One recalls the story of George Allen, who was hired off the staff of George Halas in Chicago to coach the Los Angeles Rams.
Halas was furious that the Rams failed to ask for his permission and threatened to take Allen to court. At a league meeting after the issue was resolved, Halas used the occasion to vent his anger at his former defensive coach.
“George Allen,” Halas said, “is a man with no conscience. He is dishonest, deceptive, ruthless, consumed with his own ambition.”
At that point, Vince Lombardi leaned over to the owner of the Rams and whispered, “Sounds to me like you’ve got yourself a helluva football coach.”