I can't speak for Hande but for Ebrar;
There is a rule in Turkey for local young volleyball players. They are modern slaves for their club teams till 22/23 yo. They can't leave if the club doesn't let.
In the past, Eczacibasi let Naz leave for Fener. Otherwise Fener couldn't transfer her.
Captain, Eda Erdem, mentioned on her last interview in Socrates magazinne that Federation should change this rule.
Ebrar wants to play as opposite and not happy for playing as receiver. If Vakif lets her leave, she would leave. This situation is really suck for her.
But the different situation is that at that time Naz is already a starter in Eczacibasi