Jim Harbaugh once smeared a player's blood on his face like war paint. His son says he eats cereal with Gatorade when he's out of milk. He told Michigan fans they have a "constitutional right" to expect success from the Wolverines.

Jim Harbaugh Demands Immediate Success At UM

So, yeah, he's not exactly the most even-keeled of individuals. We know this.

However, remarks from one of Harbaugh's former NFL players nevertheless raised eyebrows on Monday. .

Jim Harbaugh Weighs in On UM's American Sniper Controversy

“He does a great job of giving you that spark, that initial boom. But after a while, you just want to kick his ass," Boone said, via For The Win. "He just keeps pushing you, and you’re like, ‘Dude, we got over the mountain. Stop. Let go.’ He kind of wore out his welcome. I think he just pushed guys too far. He wanted too much, demanded too much, expected too much.

"You know, ‘We gotta go out and do this. We gotta go out and do this. We gotta go out and do this.’ And you’d be like, ‘This guy might be clinically insane. He’s crazy.'”