Louisville should have moved on more quickly. They need to make this hire yesterday to preserve any part of their incoming class. With the other coaching vacancies, the better candidates are dropping off the board quickly to Louisville's disadvantage.
Now I understand Brohm doing a soft shoe around this because he doesn't want to offend the UL folks in any way. He may very well want to coach there at some point in his life. However, I think he needs to find success at Purdue, then coach in the NFL. After an NFL stint, I could see him doing a retire in place, let-the-assistant-coaches-do-the-work role in Louisville football.
Moving to Louisville right now would set back that career timeline by 4-5 years. By then he might be too old to get into the NFL as a "bright young coach".