Juve need to play Marchisio on the left wing.
Roma played a narrow midfield against Inter and Maicon caused them all sorts of problems, because they didn't know who should close him down.
Marchisio did it well in Milan, so I see no reason not to do that again.
Maicon is not the player he was a few years ago, but he has been playing well in the last month or so, making the sort of driving forward runs he used to.