He already is out for 30 days. Next month will make it at least 50-60 days and I believe it will take more than that. Lyon wants to sell and they'll surely downplay the injury.
Dude, we signed and paid 10m euro for a guy with a broken leg who missed half of his football career due to injuries. He played 2 matches for us and retired, after getting paid for 2 more seasons. Everyone will pass a medical with Juve.