Harbor made his first career start last week in place of the injured Brent Celek and caught just three passes for 30 yards. The third-year veteran also lost a fumble in the Eagles' ninth loss in 10 games. According to reports, Harbor suffered the injury on his first catch early in the game, but was able to finish.
Harbor's season ends with career-high totals in receptions (25), yards (188) and touchdowns (two).
So far, the Eagles (4-10) have not made a roster move to fill Harbor's slot. Philadelphia will need to find a replacement at tight end before Sunday's showdown with NFC East Division rival the Washington Redskins (1 p.m. ET on FOX).
Philadelphia finishes its season Sunday, Dec. 30, at the New York Giants (1 p.m. ET on FOX).