i want it to be Kakashi, but here is why it can't be...

when Itachi told Sasuke to master mangekyou so he can be the third person, i'm imagining that he must know of another who can use it (himself, the other guy, and soon-to-be-sasuke), otherwise, why would he say there would be three? It's like me saying that if my little brother bought an iPod, he would be the third person to own one...myself and my cousin are the other two..

edit: sorry, forgot i was in the anime only, ill repost my opinion in the manga section

so, if he knows the third person, and he's doubtful of Kakashi...then who is it?

my personal opinion: i think it very well could be the leader of Akatsuki... simply because Itachi and Sasuke are the only survivors of Uchiha doesn't mean there could have been a banished one before Itachi. Also, the scrolls under the Uchiha temple floormat, someone before Itachi nust have found how to obtain Mangekyou...

does this seem logical to anyone else?????