Michigan has made a six-year, $48 million offer to Jim Harbaugh, according to sources.

Harbaugh is expected to leave the San Francisco 49ers this offseason.

Michigan's initial pursuit of Harbaugh was rebuffed.

Harbaugh played collegiately at Michigan.

A person close to the process told Adam Schefter that while it was possible Harbaugh could wind up at Michigan, "it was not likely."