"Come on," Harbaugh said. "Come on! Who is this, really?"
"This is Michael Jordan," the caller repeated.
Last summer, the greatest basketball player of all time was calling to propose a business opportunity that the second-year Michigan head coach couldn't refuse: for the Wolverines "to be the first and only football school, program, in the world to be Jordan," Harbaugh said, according to Adam Schnepp of MGoBlog.
Harbaugh recalled the conversation at the Aug. 2 launch event for Michigan's groundbreaking apparel deal with Nike and its Jordan Brand subsidiary.