PHILADELPHIA (973espn.com) - There will be change on the Eagles coaching staff.

While Doug Pederson confirmed all three of his coordinators will be back -- offensive coordinator Mike Groh, defensive chief Jim Schwartz and special teams leader Dave Fipp -- earlier this week the organization will be moving on from at least three assistant coaches.

Among the changes will be at receiver and the defensive line, news first reported by the Inside the Birds Podcast and 97.3 co-host Geoff Mosher, and confirmed to 973espn.com by a league source.

Gunter Brewer, who spent just one season mentoring the wideouts in Philadelphia, will be moving back to the college ranks, most likely at the University of Louisville, although his name is in the mix for positions with at least two other East Coast Power 5 programs, according to FootballScoop.com.

Brewer was hired from the University of North Carolina after Groh was promoted from WR coach to OC once Frank Reich left for the top job with the Indianapolis Colts. WR coach has been an issue for the Eagles except for the 2017 season when Groh was leading the unit and when the new hire is made, Pederson will be on his fourth receiver coach in four years. Former Eagles receiver Greg Lewis held the job during the 2016 season but was fired.

Whether fair or not Brewer is being scapegoated for the failure of second-year receivers Mack Hollins and Shelton Gibson to take steps forward in their careers. Brewer coached Hollins at UNC and the lengthy project showed little improvement before being shut down with groin and sports hernia issues while Gibson seems to have stagnated as a special teams gunner.

Also moving on from the offensive staff will be assistant offensive line coach Eugene Chung and that also could have something to do with Reich, who recently moved on from his OL coach with the Colts, Dave DeGuglielmo. With Philadelphia, Chung was stuck behind highly-regarded OL coach Jeff Stoutland so looking for other opportunities makes sense for him.

On the defensive side of the ball, D-line coach Chris Wilson will not be back which is probably the biggest surprise considering he has been here for the entire Doug Pederson era and has a history with All-Pro defensive tackle Fletcher Cox dating back to their days together at Mississippi State.

Treyvon Hester, the playoff hero in Chicago, also recently told 973espn.com that Wilson was instrumental in his rise from practice-squad pickup to rotational option at defensive tackle.

Brewer was under contract while Wilson and Chung had deals set to expire.

-John McMullen covers the Eagles and the NFL for 973espn.com. You can reach him at jmcmullen44@gmail.com or on Twitter @JFMcMullen