It apparently didn't take long for Jason Kelce to find work in retirement -- the Philadelphia Eagles great is reportedly joining ESPN's "Monday Night Countdown" pregame show this season ... after getting interest from pretty much every major network.
The Athletic shared the All-Pro center's next move on Monday ... saying ESPN landed the big fish over NBC, CBS, Amazon and more.
It's really a no-brainer -- Kelce is one of the most charismatic athletes out there .