I think this is almost inevitable, that Kakashi will TnJ Obito. He'll really show Obito how he's changed and I think it will be a nice fight/conversation.
Kakshi won't tnj Obito, like Jiraya didn't managa to tnj Nagato. Only Naruto can use that jutsu.
Besides, why would Kishi invest so much chapters/panels to build up a ideological/philosophical/etc. feud between Naruto and Obito to just take Obito away and have him tnj by Kakashi? Wouldn't make much sense...
Kakashi : Obito it doesn't matter what you have become, no matter what happen you'll always become my best friend the one that show me my way of ninja..........................
I think this is almost inevitable, that Kakashi will TnJ Obito. He'll really show Obito how he's changed and I think it will be a nice fight/conversation.