All they'll do is charge him with accessory to forgery, and then deport him to Israel with a "wink".
Don't think for a minute that Israel pulls off this kind of stuff without being fully assisted by the clandestine services of other countries like Germany and Poland.
That's the way of the world.
When the heat finally got to hot and started pointing at some Israelis, the other countries put on a phony act of "cooperating" with the investigation, and drag in the lowest player on the totem pole to "slap his wrist" publicly and then send him back to Tel Aviv with regards for the management.