Philadelphia Eagles tight end James Casey will undergo arthroscopic surgery to clean out loose cartilage his right knee and will be out of action for the rest of the spring, a team spokesman confirmed to USA TODAY Sports.

The spokesman said Casey should be ready to go by the start of training camp.

The Eagles signed tight end Will Shaw this week, surely in part to help take some reps in Casey's absence. Shaw's addition is why the team waived running back Miguel Maysonet, who was claimed by the Cleveland Browns.

There was speculation cutting Maysonet, who received a $10,000 signing bonus, was a sign of a rift between general manager Howie Roseman and coach Chip Kelly. However, a person informed of the team's thinking said Casey's surgery meant the Eagles needed a roster spot for Shaw. The person, who spoke on condition of anonymity because the Eagles didn't divulge the reason for the move, said running back was the position the team could afford to lose a body.

Casey signed a three-year deal with $14.5 million as one of the first additions for the Eagles in a busy opening few days in free agency. The former Houston Texans fullback/tight end is expected to play a key role in coach Chip Kelly's unorthodox offense.

Casey had career-highs with 34 receptions, 330 yards and three touchdowns, numbers that could spike with the Eagles because of the expected design of the offense and the up-tempo style that will result in more snaps.