well minato was said to be a sensory type somewhere in the manga i do believe?
therefore he could find the hiding pain.....
so he can find pain make a clone or something go place a dagger near the orginal and FTG to it or something, I mean afterall that tree where pain was hiding in did kinda look like the place he teleported the 9 tails to when he died. So he may already have a kunai there to FTG to. Anyways he is like naruto he can find the orginal pain.
Then we are assuming he was still alive from the 9 tails fight way back when. I think this is where the fight will be settled. He will give his life to save everyone taking pain with him. Reaper death seal gg. Double KO