I have zero expectations from Yam. Never watched him play, but the team that he plays for is nothing special. If he were a legit NBA-level talent, I would have expected him to play for Maccabi Tel Aviv which is hands down the wealthiest/most succesful team in Israel. For instance, Avdija and Casspi were both playing for Maccabi prior to joining the NBA. Maccabi absolutely dominates the Israeli league. The rest of the teams are nowhere near good enough to challenge them. Btw, there's no salary cap in Europe. Big/wealthy teams can practically bully smaller/poor teams pretty much at will.
Anyway, hope he proves me wrong. If he becomes a fringe NBA player, I'll be happy.