Not only that, somebody explained on here that when he was playing in the box he looked like he wanted no part of it. Not saying he can play multiple positions I'm just saying that so far alot of his best plays come from the S spot and not all over the field.
Theres not many guys like Mathieu, he can play S and CB at a high level. I dont know if William's is on that level of versatility. He is big and athletic, but you need more than that to be as versatile as Mathieu.
Just get him on campus and figure out the best way to use him, whether that be striker, Safety, or LB. Obviously due to his size he can be used in different ways depending on the package. He will need a fairly permanent position though.