Jonatan Urich is one of the prime minister's most senior and loyal associates.
The High Court of Justice accepted an appeal by the state to restore charges against Bezeq owner Shaul Elovitch for corporate fraud after the charges were previously dropped by a Tel Aviv court.
The suspect is set to have a hearing before the Rishon Lezion peace court on Sunday.
Milchan's lawyers argue that it was pressure put on him by police that led to the discrepancies in his testimony.
Former state attorney Moshe Lador said that he doesn't see a way for Netanyahu to be acquitted in Case 4000.
The court would have difficulties in proving Netanyahu's bribery charge, but the State Attorney's Office said that it saw the situation differently.
Case 1000 is probably the strongest case against Netanyahu due to testimony by Arnon Milchin this week and previous testimony by Milchin’s aide, Hadas Kline.
Although the different gifts given by the businessman were accompanied by code names, Milchan said that he didn't think that there would be legal issues.
A-G Gali Baharav-Miara said that "no circumstance had changed," and that the prosecution would continue with Netanyahu's case.
Sa'ar tweeted his support for a plea deal after details of a secret meeting between judges and the prosecutor's office was leaked.