Vietnam wants to buy two additional light frigates (displacement around 2000 tons and lenght 102m, so a bit smaller than the 20380 corvettes) of the gepard 3-9 class.
Vietnamese Navy already operates 4 such ships, all built in Zelenodolsk shipyard (Tatarstan).
These are nice ships that could be appreciated by several other countries. The only question is whether there already Russian gas turbines for them and if the ship design has been modified to accommodate them, or if they plan to get the engines from Zorya Mahsproekt in the Ukraine...