After months of rancor, ties between President Luiz Inacio Lula da Silva and Brazil's central bank look poised for an era of sweetness and light - which is precisely what worries some investors. Gabriel Galipolo, 42, is set to take the reins at the bank on Wednesday. Galipolo takes over from central bank governor Roberto Campos Neto, an appointee of former President Jair Bolsonaro, in the first transition since a 2021 law that required heads of state to wait two years before naming their own central bank chief, in a move designed to boost the bank's autonomy.