David Seaman has suggested that one Manchester United player is now showing how good he is, having caused some real problems for Erik ten Hag’s side in the opening months of the season. Manchester United’s loss to Fulham on Saturday perhaps reminded everyone of how much work lies ahead at Old Trafford, despite their recent winning run. There has been some more positive signs over the last couple of months. Rasmus Hojlund looks like the real deal. Meanwhile, Kobbie Mainoo has been excellent throughout his time in the first-team. David Seaman praises Manchester United goalkeeper Andre OnanaBut t…