his gone if he dose comeback it would put to much strain towards the shinobi force and kabuto is going to summon coffin guy he wouldn't of done that if muu wasn't down and also the tsuchikage knows all his abilities so he would insure nothing like that happens and biggest clue was we saw garra seal him
must mean something kishi wouldn't just do that so i think it might be that he is going to summon the mysterious coffin or another random coffin with an elite shinobi probably a previous kage and yh i know he can't move his arms but that dosen't stop you from summoning some1 look at orchimaru when he fought the other 2 sannin he still summoned manda even though his arms where sealed also i aint sure if you can summon someone whilst your entire body is sealed maybe his bandages will help him in some sort of way
xd Lol ...It's nothing guys. He just wanted to tell them that he was infact Female and that He(She) is Madara's Mother. Nothing special guys, move on
