Arsenal legend, Freddie Ljungberg, has urged 25-year-old Newcastle United striker Alexander Isak to join Arsenal, Chelsea or Manchester City next year. Ljungberg believes Isak has a super power and can score many goals if he joins any of the Premier League clubs. “I like Isak. His top level is huge,” Ljungberg told Swedish outlet Expressen. “He has these super top qualities that I, as a coach, might look for. I want players who have some super power, then you can put them in special situations and know that they will make a difference. “I really hope he can take the next step. Newcastle is a g…