Isla spent the 2012/13 campaign in Turin, helping Juve to the Serie A title, but is joint-owned by Udinese.
He wants clarity on where he will be playing next term, with Inter having further complicated matters by expressing a desire to take the Chile international to Giuseppe Meazza.
Juventus insist no decision has been taken on Isla as yet, with Inter not the only club to have enquired as to his possible availability.
General director Giuseppe Marotta told Sky Italia: "There is interest from Inter, but we will see what to do in the next few weeks.
"There isn't only Inter, we have had several requests for him. We haven't made a decision yet. He is a good guy who suffered a bad injury."
On his future, Isla said: "I haven't spoken with anyone at Juventus. The most important thing is finding out where I will be.
"I want to play wherever I am wanted - Juve, Napoli or Inter. The most important thing is to play and get minutes.
"I need to have continuity at one team so I can come back in the best condition."