yes you would - Jonathan won't cost more than 6-8 mil
Zapata - you can get him for 12 mil plus some youth players thrown in ... I am sure you can work that out with Udinese
Jucilei/Danilo won't cost more than 10-12 mil - read a rumour in the Portuguese A'bola that Danilo has 6-7 mil buy out clause, but may very well be a hoax
Even if you don't keep Melo, that means from him and Sissoko you can get a good 10-15 mil , add another 5 mil and you have Sandro (Pazienza is a decent back up for free)
Diego at this point could cost 10-12 mil, not more, or Pastore - 30 mil ... could include Giovinco, or Amauri in deal with Palermo to sweeten the offer, although I would consider convincing Giovinco to come back to Juve.
Not buying Matri would save you 18 mil - add another 5-7 mil, and you have a Benzema.
Aguero could go for 35-40 mil, Neymar - for 30-35. Considering the widely proclaimed Juve bugget of 100+ mil for next year, it comes within that amount ... also, consider the sale of Krasic and letting Aquialni go would bring in some extra (real or virtual) cash to spend on the players above.
As I said, you are welcome
The guy is physically imposing but also technically gifted and quick player. He drew attention a couple of years ago when he was playing as a right back for Palmeras, maybe ... don't remember exactly ... and won an award "young player of the year" or something. Since moving to Santos he has been playing in midfield, as Jonathan is the RB, in the position of Gattuso or Seedorf in Ancelloti's Milan.
A player I would like to see in Milan, btw.