Eddie Howe has claimed that there’s one Newcastle United player who still has room to grow after a big win against Sunderland yesterday. Newcastle blew Sunderland away from start to finish yesterday in what was a dominant performance against their biggest rivals in football. Speaking to NUFCTV, Eddie Howe was very impressed with Alexander Isak’s performance in the game, but he thinks there’s still a lot more to come from the Swedish striker in the second half of the season. Isak was Newcastle’s hero against SunderlandIsak netted twice in the first Tyne-Wear derby in eight years and wrote his n…