Maresca and Emerson would make a superb midfield duo. Both are two-way midfielders, where Emerson has more defensive qualities and somewhat less skill when going front, where Maresca, with his superb creativity, is the opposite.
Maresca however has every right to be angry, as he was sold in a terrible way. He made about ten media comments that he badly wanted to stay, and STILL they sell him. If Maresca isn't an option, I would love to see Pizarro in Juventus. He is not as good a ballwinner as Enzo, but his dribbling and passing are better.