Ferrari won't be as expensive as Lucio. We were set to sign Matteo in January and it was being said that the agreed fee was something like 4.5 million. I can't see him costing more than 6m.
Lucio is a good defender, but he's not exactly on my wish list. For central defence it's Mexes, Ferrari, Kroldrup, Squillaci, and Gonzalo Rodriguez that interest me, and Lucio would be more expensive than all of the above.