Normally the transfer window was going to be open by the end of June as far as I remember. But clubs are already very active lately.

After signing Leroy Sane Galatasaray is about to go for many more transfers. Petrovic or Martinez is likely to be their new goalkeeper.
I've heard Fenerbahçe is going for Kyle Walker. I wonder why... Because I don't think he can do much anymore as he is 35.
And Beşiktaş... They are still the poorest among these clubs. Offered €9m for Anguissa to Napoli but of course they found it too low and rejected.
This year the league race will be between Galatasaray and Fenerbahce again.
I don't expect anything from Beşiktaş again because they have no money.
I also feel like that unless we see a surprise. Beşiktaş needs a huge improvement in squad or Solskjær needs to maximize the performance out of his players somehow.