5. Sheamus
Maybe not the most inspiring option, but one of the most realistic when it comes to Undertaker working with someone this fall. Sheamus ticks all the boxes, he's a heel, he's good in the ring, he's a big guy. That's ideal for The Undertaker to match up against, and it would also elevate the Irishman ahead of eventually cashing in MITB to no doubt become WWE Champion. It would be a fine main event for one of the B Shows and you could definitely see the two men working together on the Mexico shows. It would be two big guys brawling, a classic face versus heel dynamic. It is very much the safe bet choice for WWE, a feud in which Taker can be protected by the generally safe Sheamus.