Did Sai Baba ever give any indication about the future of the Buti Wada before his passing?

Yes, Sai Baba made prophetic statements that hinted at the ultimate destiny of the Buti Wada. As described in Chapter 39, when Shama presented Bapusaheb Buti's plan to install a Murlidhar idol, Baba joyfully gave his permission. More significantly, he looked toward the mansion and said, "After the temple is complete, we too shall come to stay there," and "After the mansion is finished, we will use it for ourselves." While this might have been interpreted as a simple plan to visit, these words took on profound meaning later. His final command, "Place me in the mansion," directly fulfilled this prophecy, as his holy body came to rest there permanently, transforming the building into his Samadhi Mandir.