PHILADELPHIA — The Eagles granted Haason Reddick permission to seek a trade going into the offseason, according to a league source who confirmed an NFL Network report on Sunday. The 29-year-old edge rusher is entering the final year of a three-year contract and is seeking a new deal. Reddick has 27 sacks in the last two seasons, leading the Eagles in each of those years and ranking sixth in the NFL over that span. The Eagles go into the offseason with both Reddick and fellow edge rusher Josh Sweat on the final year of their contracts with several needs at other positions. Reddick, a Camden nat…