San Francisco 49ers offensive lineman Alex Boone had some strong words about his former head coach.

In an interview with HBO’s Real Sports, Boone said that Jim Harbaugh wore out his welcome in San Francisco.

READ MORE: No Indication Downtown Sacramento Church Fire Was Hate Crime, Investigators Say

“I think he just pushed guys too far,” Boone said according to ProFootballTalk.com. “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.’”

The episode airs on Tuesday and will profile Harbaugh, who took over as head coach at the University of Michigan.

READ MORE: Police: Woman Arrested In Roseville Had Mail That Was Stolen From At Least 25 People

“He does a great job of giving you that spark, that initial boom,” Boone said.“But after a while, you just want to kick his ass. . . .  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.”

 

MORE NEWS: Suisun City Fire Helps Coast Guard In Late-Night Rescue In Slough