Birds sign fourth-round pick

Linebacker Keenan Clayton, a fourth-round draft choice this year, signed a 4-year contract with the Eagles today, the team announced.

Clayton played in 54 career games at Oklahoma (28 starts – 26 at linebacker and two at strong safety as a freshman), and had 185 tackles, 17 tackles for loss, eight forced fumbles and six sacks.

The Eagles placed defensive back Marlin Jackson (Achilles') on the injured reserve list and have released quarterback Joey Elliott, running back Keithon Flemming, wide receiver Pat Simonds and fullback Chris Zardas.