If not for Green Bay, he'd have been done already.
He took an offense to a Super Bowl and nearly won. Makes him at least Trent Dilfer who lasted for years, even though Dilfer's skill set was problematic. He stood in the pocket, was functionally mobile, but was inaccurate and made bad reads.
Bud Adams told me the franchise he admired the most was the Kansas City Chiefs. Then he asked for more hookers and blow.