when sasuke was fighting, jugo said sasuke what are you up to now meaning sasuke has a plan, he saw the power naruto was able to attain because of kurama maybe he is also after the juubi so that he can be all powerful like the sage because madara and sasuke have ems so they are the only ones that know about the stone tablet in the uchiha clan and they know what it means to be one with the juubi. sasuke is pretending buh he is after something else the hatred of more than 16 years cannot subside like that trust me sasuke is more evil than he was before now that he is in front of a power like no other that he can get.