I've seen some videos, this kid is classy, very elegant on the pitch, passes very well. He does reminds me of Redondo.
My concern is about his marking skills... he seems to be a little slow, and not strong enough.
But the most important thing is that he seems to be talented. But I'm not sure if he's ready to be an active part of the squad... but if they intend to loan Marrone, they probably are impressed with the kid.