Actually, they have been re-instated to Ligue 2.
Ajaccio (who finished 15th in Ligue 2) were administratively relegated to the Championnat National for financial reasons, and so Troyes were reinstated back in Ligue 2.
Kind of justice served on Hamza Sakhi, who walked out on City, as he now finds himself in the Championnat National.... The long arm of CFG perhaps...??