Eddie Howe has made it very clear that Newcastle United must not sell their best players, and that includes Alexander Isak. The Toon boss will be aiming to kick on further next season, and that will be incredibly difficult if players like Bruno Guimaraes and Alexander Isak depart. Fortunately, it looks like they are currently going to stay put. Bruno’s £100million release clause has now expired, which means Newcastle now have a bit more control over his future. As for Isak, he has stated in an interview that he is happy at the club, while Newcastle found a solution to their PSR problem without…