Besiktas is rated the 32nd best team in the world by ELO. They had a bunch of pretty good players last year (not sure who's still there). Medel is a star for Chile with 100+ caps. Talisca went to China for big money. Queresma still plays for Portugal. Hell, Babel is a starter for the Dutch these days.
I think they could compete with Leicester or Everton, or God knows, Burnley.
Why do I care where the blokes who wrote 'Mr Blue Sky' rank teams? And if you're using that ranking system, Eibar are 36th and Salzburg inexplicably make the top 30 - you wouldn't argue either of them could make top half would you?
This argument is pointless so I'm out but top tip for the future, use the reply button, its not that hard.