You shouldn't start an OP saying the only AM you can think of is Kagawa, when you only mainly watch United and don't know much of other players. Of course your only answer will be Kagawa, he is our only natural AM in the squad who plays there at a high level. There are loads out there: Mata, Oscar , Cazorla, Silva, Ozil, Kaka, Sneijder, Gotze, Reus, Kroos all the make list of "pure" AMs, but just because they can play well out of positions doesn't mean they are pure, just means they are versatile and competent being played out of position. How you don't think any of these players don't make the list, and have just Kagawa is a bit of favouritism. If you've mainly watched United and got that Kagawa is the only AM you can think of, you obviously haven't taken it from the matches he's played for us, because he has played well less than half his games there, and his best performances have come from the Left wing in my opinion