A hallmark of Philadelphia Eagles success, the team’s offensive line will be undergoing a seismic change going forward.

Jeff Stoutland, one of the NFL’s most revered offensive line coaches, is parting ways with the Philadelphia Eagles after 13 seasons, announcing his departure Wednesday night.

“When I arrived here in 2013, I did not know what I was signing up for. I quickly learned what this city demands. But more importantly, what it gives back,” Stoutland wrote on a social media. “The past 13 years have been the great privilege of my coaching career. I didn’t just work here, I became one of you. Stout out.”

New Eagles offensive coordinator Sean Mannion will bring in his own staff, NFL Network Insider Ian Rapoport reported. The initial plan is for Stoutland to have some involvement still with the organization, but there are other teams interested in his services, NFL Network Insider Mike Garafolo reported.

The Eagles released a statement shortly after Stoutland’s social media announcement and reports from Garafolo, Rapoport and other outlets.

“The Philadelphia Eagles thank Jeff Stoutland for his legendary contributions to the game of football at the college and professional levels,” the statement read. “Stout’s influence throughout football is immense, having helped countless players reach their true potential, including many who went on to earn All-Pro honors and some who developed into future Hall of Fame talents. His passion for the development of young players set the bar not only for our organization but for the entire National Football League. It is hard to fathom another coach investing more personally and professionally in their players than Jeff Stoutland.

“Our organization is deeply grateful for Stout’s contributions to our team over the last 13 seasons. In addition to helping to deliver three Super Bowl trips and two World Championships to the City of Philadelphia, he has been a champion of our community, having given much of his time and effort to the Eagles Autism Foundation and many of our team’s philanthropic initiatives. Although he will not be competing with us on game day, he will always be a beloved member of the Eagles family. His impact on this franchise and our community is immeasurable, and it’s safe to say he will always be welcome in the City of Brotherly Love.”

Stoutland, 63, was the longest-tenured member of the Philadelphia staff with a resume that boasts coaching seven players to 27 Pro Bowls.

Stoutland, whose official title was run game coordinator/offensive line coach, has been with the club since 2013. He was part of Chip Kelly’s staff then and went on to be a member of two more head coaches’ staffs: Doug Pederson and Nick Sirianni. During Stoutland’s tenure, the Eagles earned nine playoff berths, advanced to three Super Bowls and won the franchise’s only two Lombardi Trophies.