I think there is every probability he may walk free in the end.
A change of investigating Judge ordered from a lofty government position, over 100 other wealthy and influencial individuals implicated who can pool their bribe money and reach the whole legal system through the old-boys network. It could all end in smiles for Rocca.
Look at the BAe investigation regarding the Saudis´, the British government have ordered the Judges not to proceed because the case could be of a sensative nature regarding national security. At least that´s the excuse for not exposing corrupt officials and MPs´.
If that kind of thing can happen in the UK at that level, then Rocca must have great hope for his case.