@Rozay surgery is always a last option. If something can heal just by rest and physio then that is first protocol. If he had torn the muscle from the bone then it would be straight in to Surgery but if you remember he had a hamstring issue in pre- season. He pulled up in a game, and I think he was out the following game but back the game after.
Having had hamstring issues that to me looks like they rushed him back before it was fully healed.
Hamstrings are a nightmare because as I said earlier from my own experience
you can feel good and like you’re ready to go and then 1 sprint and it goes again. Another 2-3 months on the shelf. Rather they made sure he was good to go than throw him back in just for it to go again and us loose him for another 3 months.