I'm not sure they do now.
At a point when negotiations appeared to be going well for Higuain, Juve were under little or no pressure in the Jovetic negotiations.
Now that other negotiations don't appear to be going so well, Juve's lack of other options means they are not in as strong a positions as they once were.
With Fiorentina apparently needing to sell Jovetic soon and Jovetic apparently wanting to join Juve, there is still plenty in Juve's favour, though.