Upgrade to command
The only thing that you can say at the moment is that there are no expats FO upgraded to Captain on any fleet at this moment in THY. Everything are rumours and promises but nothing has been done on this subject at this time... And all the rules on seniority list in the Company and regulations about this subject are on benefit of local pilots...
In the other hand, most of the Captains in EK are expats.... So, you can think about this...
Many brokers are telling some false information to the FO applicants about the conditions in THY: more salarie than the real one (not to mention the rate euro-turkish lira), possibility to quick upgrade (no expat has been upgraded till now), some bonus for housing (this is just for Captains on long haul) and other things (not many things more).... Be careful with this, ask for detailed information and compare it with your colleagues flying in THY...
Have nice flights!!