The Slovenian made his debut in Alpe Adria Cup with 27 points.
Lapornik spent last season with Bilbao Basket.
He will be free to leave the Slovenian team in case of better offers.
He played 11 years professionally
There are three EuroLeague players
Klemen Prepelic cannot wait for November 24
Luka Doncic, Anthony Randolph, Aleksej Nikolic, Zoran Dragic, Edo Muric and Jurij Macura are the players from EuroLeague teams
Trifunovic will replace Kokoskov who remains as a consultant