Haynes, who joined Terps coach Mark Turgeon’s staff in June 2019, is among three new assistant coaches hired by Smart, who left his job at Texas for the Big East Conference school last month.
“I am extremely excited to be joining Marquette University with my family and can’t wait to get started,” Haynes, a Detroit native who’s spent most of his coaching career in the Midwest, said in a statement. “The opportunity to work for Shaka Smart is a blessing and I’m looking forward to joining the rest of the staff as we work toward building success, both on and off the court.