obito theres no way but sasuke on the other hand, i have no doubt in my mind that he will return, theyve forshadowed it so much and think about it, narutos goal has been to return sasuke ever since way before shippuden even started, its almost more likely to happen than naruto becoming hokage, if you ask me, theyre gonna end the fight with you thinking they both died to add suspence, then out of nowhere they will both rise, naruto will prolly preach some bullshit about itachi that makes sasuke change his ways and with all narutos done for the shinobi world, i think the least they can do is let sasuke come back