A bit extreme, but my money is on Bibbi+Michaeli government. Everybody else is the anti-Bibbi camp stands for nothing and therefore has nothing to gain so Bibbi has nothing to offer them and win them over. Last time he gave Gantz a second place rotation in PM, but nobody will fall for that again. Saar will never win any seats again, Gantz & Liberman put removing Bibbi as their sole agenda, the only thing Lapid stands for other than removing Bibbi is anti-religion and Bibbi can't go there, and Meretz is way too far left for anybody else to join (supports investigating Israel in The Hague).
Merav Michaeli on the other hand charsimatically revived the labor party from the ashes with an ideological liberal agenda focusing mostly on feminist rights, and she aspires to replace Lapid as the leader of left wing public. The labor party also owns very valuable income-producing real estate, so she is the least beholden to capricious anti-Bibbi donors. Bibbi can make her foreign minister putting her in the constant limelight, give her some progressive wins like specialized sexual offense courts that she campaigned for, and the opportunity to attempt to end the Arab-Israeli conflict by including an Arab party like Raam (UAL) in the government coalition (in return for accepting Israel as a Jewish country and denouncing terror) and more normalization in the Middle East. She would stand a realistic chance of growing her base to 10+ seats rom the perch of a dominant and proven leader, and that's enough to form a block with Lapid with her being #1 and a serious candidate for PM.
It also gives Bibbi the eternal centrist the excuse he always loves to avoid right wing moves like annexation and the international acclaim of leading a true unity government that represents the full spectrum of Israeli politics, setting aside Yes Bibbi/No Bibbi.
In his victory speech below, Bibbi uncharacteristically imitated Michaeli and constantly used the feminine pronouns, which made me think he's angling there. Yes, Bibbi tried taking the Labor before and Michaeli blocked it, but that was when she wasn't #1 and didn't have what to gain.