I counted 9 Slovenians who play in Italy in the squad called for this qualifier.
I guess that 6-7 will start the match (Handanovic, Bacinovic, Birsa, Ilicic, Cesar, Jokic, maybe Andjelkovic).
Edit: Actually, as I suspected, Birsa still isn't in Serie A. He only signed for Genoa but will join them in the summer. He's a very good player, one of their team leaders, so it surprised me when I saw that he's a Genoa player and I haven't seen him play for them.