The Italy international has been strongly linked with a move away from his Spanish club this summer, with Juve leading the race to acquire his services.
"We are optimistic. It's a positive sign that the two clubs are negotiating.
"We hope that the deal will be completed soon.
"It's clear that we are talking about an important player and Juventus are pushing strongly (for the deal to be done) while Rossi would be delighted to move there."