The hottest rumour in the WWE right now is The Undertaker returning at Battleground. The sensational story first caught fire when Joe DeFranco posted a photo of the Deadman training in the gym. A day after that, self proclaimed WWE insider 'falconarrow' stated on Reddit that "he's back" and clarified "the guy with the coffins" when discussing Battleground spoilers. Many fans are now convinced that The Undertaker will be returning on Sunday. Of course it is only a rumour, but falconarrow has had a pretty good track record in the past. Then again, he has got stuff wrong as well, and has quit reddit since posting the Taker hint. What we now know for sure is The Undertaker will be back at some point this summer. Dave Meltzer confirmed on Wrestling Observer Radio that both Undertaker and Sting are booked for SummerSlam. But that doesn't necessarily mean Taker will be at Battleground, although it definitely makes it a good possibility. His shock return would be a major segment that would get fans buzzing on social media and encourage people to never miss a month of WWE Network action. If the return did happen this Sunday, there's a range of exciting angles that WWE could execute. If any of these happen, expect one of the biggest crowd pops of the year.