Might be.

I know Carpatair has a few on order, but those are formerly Jetsgo planes. Of course it is still possible that Carpatair has taken up this plane.

Another possibility might be Aeroflot Don. They will take on a few F100s that where previously with Jetsgo. Amongst others the former C-GKZP. It is now at Woensdrecht with registration OE-IIC (Austrian registration because of the Austrian lessor). Still in full Jetsgo livery though.

Then there is Malev, they do not operate F100s but do have 4 F70s. They used to have 5, but HA-LME went to KLM Cityhopper a year and a half ago. But Malev seems pretty satisfied with their B736s so getting F100s would be an odd move.

Slovak Airlines also has a few F100s.

But again all this is only speculation.