Missing out on the Champions League could be costly for Newcastle United. While the PIF project at Newcastle is no doubt a long term one, surely few would deny that this season has been disappointing. There are a multitude of reasons for that of course and the success of Eddie Howe’s first full season in charge of the club was always going to be hard to follow. Still, the grim reality is that not qualifying for the continent’s elite club competition leaves the club somewhat vulnerable. Obviously, they miss out on the added revenue the Champions League brings, for starters. Then, there’s player…