I mean, concidering Laportas connection with Jorge Mendes, we will go for Leao, if he wants to leave.
Diaz is good but he is already 27, he will not improve much.
Leao is crazy head, but on his days he is unstoppable.
Nico, youngest, could improve a lot, but his transfer seems like most expensive.
Doubt Liverpool will want something like 50mil for Diaz, because I would not offer more concidering age and contract length.
When you put everything on papper, if Flick can put in order Leao, concidering his age, talent, celling it makes most sense.