Not only his club but also the IBA (Israeli Basket Association) has to give a severe punishment to Guy Pnini.
In team sport leagues it's well known that the players or trainers of one team try to intimidate their opponents: insults, racism, anti-Semitism,…
The same problem exists among the rival supporters.
But to stop that trend - like you see in Europe the rise of anti-Semitic, racist,… supporter choirs - you must give very severe punishments to the offenders, also here, in Israel.
Maybe, also a severe doping control can help to solve that problem. Clean sportsmen behave better or react less aggressive.