The Eagles have parted ways with defensive line coach Chris Wilson, wide receivers coach Gunter Brewer, and assistant offensive line coach Eugene Chung, according to an NFL source.

The team chose not to renew Wilson after his three-year contract expired. Brewer was with the Eagles for just one season. He had never coached in the NFL and reportedly is going back to college to be Louisville’s receivers coach.

Chung’s three-year deal also expired.

Wilson also had never been an assistant coach in the NFL. He had a long, decorated college resume, though, and coached Eagles All-Pro defensive tackle Fletcher Cox at Mississippi State. Defensive coordinator Jim Schwartz has often called the D-line the engine of his defense. Production was there, but someone new will coach the unit next season.

Brewer coached Eagles receiver Mack Hollins at North Carolina. Hollins missed the entire season after undergoing sports hernia surgery. The receivers occasionally had issues lining up this season, and there were problems with substitutions, which are the assistant coach’s responsibility.

The Eagles are looking for their fourth receivers coach in four seasons. Mike Groh was promoted to offensive coordinator last offseason.

The three coordinators — Schwartz, Groh, and special-teams coach Dave Fipp — will return next season, coach Doug Pederson said this week.