A Michigan assistant coach is expected to leave Jim Harbaugh’s staff and join Ryan Day at Ohio State, according to a report.

Monday, WolverinesWire reported that Michigan defensive line coach Greg Mattison has an expiring contract with the Wolverines and that he was expected to receive a new deal in Ann Arbor or step away from coaching. However, it is now being reported that Mattison is headed to Columbus to join the Buckeyes staff.

WolverinesWire cited anonymous sources, but said that current players and incoming recruits were notified of the decision.

Mattison was in his eighth season with Michigan and fourth as the team’s defensive line coach on Harbaugh’s staff. Prior to focusing on the line, Mattison was the defensive coordinator on Brady Hoke’s staff from 2011-2014.

This was Mattison’s second stint with the Wolverines, coaching the defensive line in Ann Arbor from 1992-1996. He was also promoted to defensive coordinator for the 1995-1996 seasons.

Mattison’s role with Ohio State was unspecified.