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.
According to Gallant, Military action is the only way to secure Israel’s north as diplomacy with Hezbollah fails
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.
"Lebanon is adhering to its position of rejecting war and not intending to enter it," the officials added, noting their concern in the recent escalation.
Gallant also asserted Israel would operate "by any means" necessary in order to return the hostages held in Gaza captivity and to destroy Hamas.
Amos Hochstein is expected to meet Israeli leaders in a push to find a diplomatic solution to the IDF-Hezbollah conflict.
The Hostage Family Forum earlier addressed Gallant's statement that the IDF is shifting its focus to the northern frontier, saying that by doing so, they are abandoning the hostages in Gaza.
Hezbollah’s war with Israel has shifted from supporting Hamas to an existential struggle, a military source told Ad-Diyar.