Will be really surprised if the Argentine is let by the old lady club. Over years he has proven to be a very good asset to the club. He is quite younger and I don't why the french international would be swapped in his favor.
Will be following this news closely to understand why they might be looking to offload him as I don't see any reason for it. If dybala is to move, selling him to English premier League side like Manchester United and the likes who have been on his case would be a smarter business move.