Israel's Business Forum urged Prime Minister Netanyahu to stop replacing Defense Minister Gallant, warning of increased division during wartime.
Replacing Defense Minister Gallant with MK Sa'ar strengthens Netanyahu's position and benefits the haredi parties, but faces protest challenges.
Thousands of Israelis are also protesting the replacement.
Netanyahu's potential cabinet changes spark debate, overshadowing calls for a national unity government amid rising tensions in Israel.
Thousands of protesters are blocking Namir Road outside Gideon Sa'ar's home, urging him not to join Netanyahu's government, as activist Yaya Frink urges for more to join.
According to the source, Netanyahu's associates are negotiating with United Right Chairman Gideon Sa'ar to replace Gallant.
Israeli lawmaker Gideon Sa’ar calls for a decisive military campaign to eliminate Hezbollah, warning that delaying action only increases the threat posed by the Iranian-backed group.
Sa'ar began by saying that the massacre was a result of "mistaken strategic navigation" that lasted 30 years, since the Oslo Accords in the mid-1990s.
Rumors about a unification of non-Likud right-wing politicians swirled for months after the October 7 massacre.
According to sources, Netanyahu initially wanted to dismiss Gallant but delayed the plan due to the ongoing security situation in Israel.