The Eagles plan to release Darnold, Tom Pelissero of NFL Network reports.
Arnold appeared in all 17 games during the 2022 season and caught nine of 13 targets for 135 yards.
Arnold played 14 of the Jaguars' 67 snaps on offense and finished with a five-yard catch across three targets in Sunday's 36-22 win over the Titans.
Arnold played three of the Jaguars' 61 snaps on offense and wasn't targeted in the team's 28-27 win over the Ravens on Sunday.
Arnold secured his only target for 24 yards during Sunday's 23-17 loss to the Giants.
Arnold was on the field for eight of the Jaguars' 73 offensive snaps in Sunday's 13-6 loss to the Texans, finishing with a 20-yard reception on two targets.
Arnold played just two first-half snaps and wasn't targeted in Saturday's 28-12 preseason loss to Atlanta.
Arnold (knee) wasn't among the players added to Jacksonville's roster Saturday ahead of Sunday's season finale against the Colts.
The Jaguars have activated Arnold (knee) from the reserve/COVID-19 list Wednesday, returning him to injured reserve/designated for return.
Arnold (knee) was placed on the reserve/COVID-19 list Monday.