I think that Itachi will just talk to Naruto. It's probably a shadow clone anyways, and you can't capture a shadow clone. Maybe he'll ask Naruto how he's been and if he wants to go for some ramen. lol. no, but seriously, I think he'll talk about the sharingan, or tell that he's not after him anymore, and maybe Itachi is quitting Atasuki. Any of those is possible. He's not attacking, we know that for sure, so it's either him wanting to talk, he's giving a message, or he wants to go for some ramen.