Throughout his long career with the Philadelphia Eagles, Jason Kelce not only had a legendary career on the field, but he became an important leader for the team in the locker room. But as he now retires from the game, he’ll leave a void to be filled both on the field and within the team.

During a recent interview with NFL insider Tom Pelissero of the NFL Network at the Annual League Meeting on Sunday, Philadelphia Eagles head coach Nick Sirianni made it very clear just how much the team will miss Jason Kelce this upcoming season along with defensive end Fletcher Cox.

“Obviously, we’ll miss their contributions on the field, but even more importantly their leadership,” he said of Kelce and Cox. “They are unbelievable leaders, unbelievable all-time Eagles, unbelievable people and unbelievable players. You know what, those guys did such a good job leading that I don’t want to say, ‘Hey, it’s Cam,’ because he’ll be the guy that will step into Jason’s role. Or Jordan Davis, it can be anybody that steps into that role because they watched the greatness of those guys lead day in and day out. … I know we have a lot of good candidates on our team that are going to be able to step up and fill that void.”

We’ll have to see who steps up to fill the void left by Kelce and Cox. But it’s pretty clear that it won’t be easy.