Originally Posted by
KING
This is from the wiki
"Frustrated when a reincarnated Nagato is sealed by the recently freed Itachi Uchiha, Kabuto finds himself forced to use his trump card but it's only after Naruto Uzumaki takes out several more reincarnated shinobi, that he has Mū summon the reincarnated Madara to the field. Forcefully removing his coffin's lid before voicing his assumption that Nagato had finally used the Outer Path: Samsara of Heavenly Life Technique to bring him back from the dead, Mū corrects Madara, explaining that Summoning: Impure World Reincarnation had been used instead. Somewhat shocked by the manner of his revival, the two confront the Fourth Division. Upon noticing the forehead protectors of the allied army, Madara asks who is responsible for the Impure World Reincarnation. However, as Mū does not know, Kabuto takes full control and, speaking through him, identifies himself as Tobi's assistant before informing Madara that he had been restored to an extent beyond even his prime. Finding it rather dreary to be spoken to through a corpse, Madara questions Kabuto with what he knew of his prime but admitting his ignorance, Kabuto requests a demonstration."
I'm implying that he would hate having been brought by any technique that the Senju came up with. He assumed that it was Nagato using one of the Rinnegan techniques that brought him to life. How dafuq would he know about Nagato unless he planned something for the future.