(WXYZ) -- Mike Macdonald is going from one Harbaugh's staff to another Harbaugh's staff.
Michigan announced Sunday it has hired Macdonald as its defensive coordinator.
Macdonald has spent the past seven seasons with the Baltimore Ravens, including the last three as linebackers coach.
“It is an honor to join Coach Harbaugh’s staff at the University of Michigan,” Macdonald said in a release. “I firmly believe in his vision and am excited to get to work. Our staff will work tirelessly to develop our young men both on and off the field."
“Mike is an excellent defensive mind who is highly respected across the NFL,” said Michigan head coach Jim Harbaugh. “He has been a valuable member of the Baltimore Ravens staff, and shown a passion for teaching, coaching and developing his players."
Macdonald replaces Don Brown, who was hired to be Arizona's defensive coordinator in early January.
