Board Thread:Theories and Speculation/@comment-3365837-20160826052003/@comment-734582-20160914073833

Theannoyingpragmatist wrote: What the heck were these shinobis thinking? It seems you can't just become Kurama's jinchuriki, as even Minato (a Kage no less) couldn't. It seems that Minato was planning on making a perfect jinchuriki (as it seems his encounter with Bee convinced him it was possible). To do that he needed better seals. However when Kushina died his plan was ruined and so he launched it half-baked. Note that he had a baby-sized sealing altar on summoning (for some reason) which suggests he was prepared for this. The seal is designed to have the Jinchuriki get used to the chakra of the Biju.

Although Edo Tensei can't become Jinchuriki, Minato technically became a Jinchuriki the moment his Reaper Death Seal was complete (and died immediately after). It seems that Edo Jinchuriki can in fact have their beast sealed inside them and use them for power.