While most of the Michigan football players have raved about Jim Harbaugh, players in his past have had varying opinions.
Former San Francisco 49ers running back Brandon Jacobs was among those who didn't respect him, when he played for him in the 2012 season.
That was the season Harbaugh led the 49ers to the Super Bowl.
Jacobs shared those feelings Thursday on CBS Sports Radio's "Tiki and Tierney" show, saying Harbaugh "didn't know what he was doing."
Jacobs called in unsolicited to talk to co-host Tiki Barber, his former teammate with the New York Giants. After discussing other topics, co-host Brandon Tierney asked him about playing for Harbaugh.
"I had a lot of respect for Jim when I was there _ before I got to know him," Jacobs said. "I enjoyed my time there, but we didn't see eye-to-eye. I knew a little bit more about football than what they led on. That's how I was taught."
Jacobs only played in two games that season and had five carries for seven yards. The previous five seasons in New York he had at least 147 carries each year.
His biggest issue was with Harbaugh's supposed lack of football knowledge.
"Going somewhere where they don't have route conversions into certain coverages was just absurd," Jacobs said. "They're just running routes in the defense, getting people killed. Size and strength is what they had, and that's why they won. Let's be real. They had great assistant coaches, but Jim didn't know what he was doing. Jim had no idea. Jim is throwing slants into Cover-2 safeties, getting people hurt. That guy knew nothing, man."
Considering Harbaugh's impressive coaching resume _ two conference titles at the University of San Diego, taking Stanford from one win to a national power, three straight NFC title games with the 49ers, and two 10-win seasons at Michigan _ Jacobs' assessment seems unusual.
But Harbaugh is a magnet for opinions from all sides because of his visibility.
