If the Eagles let him walk after this year, it turns a late 3rd in 2026 into an even later 3rd in 2027. Edge rushers with potential get good contracts even with an injury history. Not such a bad thing when you have three 3rds.
There is very little downside to this move beyond limiting your ability to replace him via free agency (and cancelling the comp pick), which seems unlikely to be the Eagles move in 2026 anyway.