Not sure of reliable it is, but Greek media is reporting that we're in talks with Croatia for the export of Corvettes.
Σε συζητήσεις με την Κροατία για την ναυπήγηση κορβετών, για λογαριασμό του Πολεμικού της Ναυτικού, βρίσκεται η Τουρκία, που πλέον φαίνεται να διαμορφώνει την
www.enikos.gr
"
Diplomatic circles confirmed to enikos.gr the exploratory discussions between Croatia and Turkey for the construction of 2 to 3 ADA corvettes. The same sources reported that representatives of the manufacturing company “Savunma Teknolojileri Muhendislik ve Ticaret” (STM) recently met in Zagreb for meetings. The Turkish Embassy there is said to play a special role, which has already made exploratory contacts with the Croatian Minister of Defense. The discussions follow the visit of the Turkish Corvette Burgazada to Split last October.
...Turkey is said to maintain its lead with its main weapons, the lower cost (250 million per corvette instead of 300-500 million that the corresponding proposals from the competition cost)
and faster delivery (they already have one that they would have given to the Ukrainians but could not due to the Montreux Convention)."
Unsure about this but an interesting claim. Piece is hardly anything to write home about, claiming Ada Class was started in 2015 and is based on Freedom Class LCS and that Turkey doesn't deliver Ivan Mazepa to Ukraine because of Montreux, instead of you know, the Russian Black Sea Fleet. Maybe the "European customer" we read about a month or two ago wasn't Romania.