Rumor Roundup (May 5, 2015): Payback main event, Undertaker WWE contract, Chris Jericho return, more!

Speculating on the rumors surrounding pro wrestling is a favored pastime of many fans, perhaps second only to actually watching the matches. In this daily column, we take a look at the latest rumors being churned out by the pro wrestling rumor mill.

Important reminder: Rumors are just that -- rumors. None of this has been confirmed as legitimate news or fact, it's just circulating around the pro wrestling rumor mill. Remember, take it all with a grain of salt.

Rumors for the Day:

• Apparently one of the reasons Dean Ambrose was added to the Payback main event to make it a Fatal 4-Way was because of the planned triple threat at SummerSlam and WWE not wanting to do too many triple threat matches in such a short period of time. And, yes, it looks like Ambrose is the fall guy.

• According to the Observer, Undertaker's WWE contract is coming up soon though it's still expected that he will work WrestleMania 32 next year in Dallas.

• Chris Jericho has been teasing an announcement regarding WWE and it looks like that will be another house show run this summer, according to PW Insider.

• Charlotte was backstage at Raw last night and is scheduled for SmackDown. As mentioned, her main roster call up is apparently coming really soon.

• PW Insider notes that Billy Corgan is set to work the upcoming Impact Wrestling tapings in Orlando this weekend, so he's starting in his new role with creative soon.

If you have heard of any interesting rumors that you'd like to add, feel free to post them in the comments section below. Just remember they are rumors and not confirmed as fact, so please take them as such. Have fun with it.