How much we are going/willing to spend isn't really influenced by how far we progress in Europe. There are certain players we won't be able to afford, regardless of how far we go, simply because we can't offer them insane wages like the "Arab" clubs (PSG, City), the big two in Spain, or the "Russians" (Chelsea, Zenit, Shakhtar, Anzhi, etc...).
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Giacherrini and Padoin didn't really do $#@!