Lorbek is 'free agent' this summer so I guess if he doesn't come this year, he never will. He is already 28 and I think the clock is ticking.
Bertans played for my hometown club for past few years, then moved to Partizan Belgrade this year. Imo he is not appropriate for nba, he has a lot of problems with his knees. He didn't impress me tbh. All he did was shoot 3's, but not very successful.